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Science Abbreviations

Look through 3123 acronyms and abbreviations related to Science:

2MASS	Two-Micron All-Sky Survey
A	Ampere
A by E	Admission by Exception
A-SAR	Advanced Synthetic Aperture Radar
A-SCAT	Advanced Scatterometer
A.K.A.	Also Known As
A3RI	Antarctic Astronomy and Astrophysics Research Institute
AA	Ascorbic Acid
AA	Acrylonitrile And Acrylamide
AA	Acrylic Acid
AA	Actinobacillus actinomycetemcomitans
AAAS	American Association for the Advancement of Science
AAAs	Abdominal Aortic Aneurysms
AABR	Automated Auditory Brainstem Response
AACC	American Association for Clinical Chemists
AACI	Association of American Cancer Institutes
AAD	Australian Antarctic Division
AAD	Age at Diagnosis
AAD	Acidic Activation Domain
AADC	Aromatic Acid Decarboxylase
AAH	Atypical Adenomatous Hyperplasia
AAL	Alternaria Alternata Lycopersici
AAM	Atmospheric Angular Momentum
AAMC	American Association of Medical Colleges
AAMI	Association for the Advancement of Medical Instrumentation
AAO	Age At Onset
AAOE	Airborne Antarctic Ozone Experiment
AAP	amino acid permease
AAPC	Attenuated Adenomatous Polyposis Coli
AAR	abnormal anaphase resolution
AARI	Arctic and Antarctic Research Institute (Russian Federation)
AARP	American Association of Retired Persons
AAS	Atomic Absorption Spectrophotometry
AASE	Airborne Arctic Stratospheric Expedition
AATP	Acquired Amegakaryocytic Thrombocytopenic Purpura
AATSR	Advanced Along-Track Scanning Radiometer
AAU	Acute Anterior Uveitis
AAU	Association of African Universities
AAU	Association of American Universities
AAUC	Alumni Associations of the University of California
AB	Alcian Blue
ABA	American Bar Association
ABA	Agaricus Bisporus Agglutinin
ABBA	Automated Biomass Burning Algorithm
ABC	aneurysmal bone cyst
ABC	Autism Behavior Checklist
ABCS	Active Bacterial Core Surveillance
ABD	Actin Binding Domain
ABHI	Association of British Health-Care Industries
ABI	Advanced Baseline Imager (GOES)

ABL	Acute Basophilic Leukemia
ABLE	Atmospheric Boundary Layer Experiment
ABM	Agaricus Blazei Murill
ABMT	Autologous Bone Marrow Transplant
ABPM	ambulatory blood pressure monitoring system
ABR	Auditory Brainstem Response
ABS	acute bacterial sinusitis
aBS	Antenatal Bartter Syndrome
ABS	Advanced Baseline Sounder
AC	Alternating Current
AC	Academic Council
AC	Amylose Content
AC	Adenylyl Cyclase
ACA	Acrodermatitis Chronica Atrophicans
ACARS	Aeronautical Radio, Inc. Communication and Recording System
ACASS	Alberta Congenital Anomalies Surveillance System
ACC	Australian Cancer Council
acc	Atlantic Climate Change
ACC	Adenoid Cystic Carcinoma
ACCCI	American Coke and Coal Chemicals Institute
ACCs	Acinar Cell Carcinomas
ACD	Aeronautical Charting Division (NOS)
ACD	Avellino Corneal Dystrophy
ACDP	Ancient Conserved Domain Protein
ACDS	Astronomical Catalogues Database Subsystem
ACDS	Archival Catalogue and Database Subsystem
ACE	Angiotensin Converting Enzyme
ACE	Aerosol Characterization Experiment
ACE	Accessory Cholera Enterotoxin
ACEC	Area of Critical Environmental Concern
ACF	Autocorrelation Function
ACF	Aberrant Crypt Focus
ACF	Asymmetric Crying Facies
ACF	Aberrant crypt foci
ACGM	Annual Clinical Genetics Meeting
ACh	Active Chromatin Hub
ACI	Alloy Casting Institute
ACIS	ACademic Information Services (IBM)
ACIS	Automated Cellular Imaging System
ACLL	Atypical Chronic Lymphocytic Leukemia
ACML	Atypical Chronic Myeloid Leukemia
AcMNPV	Autographa Californica Multiple Nuclear Polyhedrosis Virus
AcMNPV	Autographa Californica Multinucleocapsid Nuclear Polyhedrosis Virus
ACMSU	Atmospheric Chemistry Modelling Support Unit
ACNPV	Autographa Californica Nuclear Polyhedrosis Virus
ACOE	Army Corps of Engineers
ACOS	Attitude and Orbit Control System
ACP	Atmospheric Chemistry Program (DOE)
ACP	Acyl-Carrier Protein
ACR	Active Cavity Radiometer

ACRIM	Active Cavity Radiometer Irradiance Monitor (EOS)
ACS	American College of Surgeons
ACSOE	Atmospheric Chemistry Studies in the Oceanic Environment
ACSYS	Arctic Climate System Study (WCRP)
ACUNS	Association of Canadian Universities for Northern Studies
AD	axiodistal
AD	autistic disorder
AD	After Disease
AD	Alzheimer Disease
AD	Affecting Disease
AD	Agar Dilution
AD	Arginine Deiminase
AD	Autosomal Dominant
AD	Applicable Document
AD	Atopic Dermatitis
ADA	Automatic Data Acquisition
ADA	Americans With Disabilities Act Of 1990 (Text Of ADA Legislation)
ADAAC	Affiliated Distributed Active Archive Center
ADALT	Advanced Radar Altimeter
ADAM	Astronomical Data Acquisition and Management
ADC	Analogue to Digital Converter
ADC	Atlantic Data Coverage (Meteosat)
ADC	Astronomical Data Center
ADC	Affiliated Data Center
ADCA	autosomal-dominant cerebellar ataxia
ADCAs	Autosomal Dominant Cerebellar Ataxias
ADCC	Autosomal Dominant Congenital Cataract
ADCI	American Die Casting Institute
ADCLS	Advanced Data Collection and Location System
ADCP	Adenosine Deaminase Complexing Protein
ADD	Architectural Design Document
ADEM	Alabama Dept. of Environmental Management
ADEOS	ADvanced Earth Observing Satellite (Japan)
ADF	Amsterdam density functional
ADG	Average Daily Gain
ADH	Antidiuretic Hormone
ADH	Autosomal Dominant Hypercholesterolemia
ADH	Atypical Duct Hyperplasia
ADH	Autosomal Dominant Hypocalcemia
ADHSP	Autosomal Dominant Hereditary Spastic Paraplegia
ADI	Autosomal Dominant Ichthyosis
ADL	Avionics Development Laboratory
ADL	Acid Detergent Lignin
ADLTE	Autosomal Dominant Lateral Temporal Epilepsy
ADMCKD	Autosomal Dominant Medullary Cystic Disease
ADMI	American Dye Manufacturers Institute
ADNFLE	Autosomal Dominant Nocturnal Frontal Lobe Epilepsy
ADNIV	Autosomal Dominant Neovascular Inflammatory Vitreoretinopathy
ADO	Allelic Drop Out
ADO	Autosomal Dominant Osteopetrosis

ADOA	Autosomal Dominant Optic Atrophy
ADOM	Acid Deposition And Oxidant Model (air Pollution)
ADPE	Automatic Data Processing Equipment
adPEO	Autosomal Dominant Progressive External Ophthalmoplegia
ADPKD	Adult Dominant Polycystic Kidney Disease
ADPKD	Autosomal Dominant Polycystic Kidney Disease
ADPLD	Autosomal Dominant Polycystic Liver Disease
ADPSP	Autosomal Dominant Pure Spastic Paraplegia
ADR	Adiabatic Demagnetization Refrigerator
adRP	Autosomal Dominant Retinitis Pigmentosa
ADRV	Adult Diarrhea Rotavirus
ADS	Astrophysics Data System
ADT	Actual Dive Time
ADU	Analogue to Digital Unit
AdvaMed	Advanced Medical Technology Association
AE	Atmosphere Explorer
AE	anion exchanger
AE	Axial Element
AE	Effective Area
AE	Acrodermatitis Enteropathica
AE	Adverse Event
AE	Assemble Axial Elements
AE	Attaching and effacing
AEA	Atomic Energy Authority
AED	Anhidrotic ectodermal dysplasia
AEDU	Admiralty Experimental Diving Unit
AEEC	attaching and effacing Escherichia coli
AEG	Acidic Epididymal Glycoprotein
AEH	Atypical Endometrial Hyperplasia
AEL	After Egg Laying
AEP	American Electric Power Company, Inc.
AEP	Alkaline Extracellular Protease
AER	Atmospheric and Environmental Research, Inc. (Cambridge, Massachusetts)
AER	Apical Ectodermal Ridge
AERONOX	Impact of NOx Emissions from Aircraft upon the Atmosphere
AES	Agricultural Experiment Station
AES	Atmospheric Environment Service (Canada)
AESA	Atmospheric Effects of Stratospheric Aircraft
AEV	Avian Encephalomyelitis Virus
AEV	Avian Erythroblastosis Virus
AF	Amniotic Fluid
AF	ameloblastic fibroma
AF	Air Force
AF	activation function
AF	Archaeoglobus Fulgidus
AFA	Ankyloblepharon Filiforme Adnatum
AFB	Air Force Base (USAF)
AFC	Amniotic Fluid Cells
AFES	Alternative Fluorocarbons Environmental Acceptability Study
AFG	Air Force Geophysics Laboratory

aFGF	Acidic Fibroblast Growth Factor
AFGL	Air Force Geophysics Laboratory
AFIGE	Asymmetric Field Inversion Gel Electrophoresis
AFLP	Amplified Fragment Length Polymorphic
AFLPs	Amplified Fragment Length Polymorphisms
AFM	Atomic Force Microscope
AFM	Array File Maker
AFOS	Automation of Field Operations and Services
AFOSR	Air Force Office Of Scientific Research(USA)
AFRRI	(U.S.) Armed Forces Radiobiology Research Institute
AFSCN	Air Force Space Command network
AFT	Acute Functional Tolerance
AFTN	Autonomously Functioning Thyroid Nodule
AFV	Amniotic Fluid Volume
AGA	appropriate for gestational age
AGC	Advanced Gastric Carcinoma
AGC	atypical glandular cells
AGCI	Aspen Global Change Institute
AGE	Agarose Gel Electrophoresis
AGEP	Acute Generalized Exanthematous Pustulosis
AGFS	Aviation Gridded Forecast System
AGI	Arabidopsis Genome Initiative
AGL	Acute Granulocytic Leukemia
AGL	Above Ground Level
AGM	African green monkey
AGMK	African Green Monkey Kidney
AGN	Active Galaxy Nucleus
AGNIC	Agriculture Network Information Center
AGO	automated geophysical observatories
Agr	accessory gene regulator
AGSP	Australian Gonococcal Surveillance Programme
AGT	average generation time
AGU	American Geophysical Union
AGWP	Absolute Global Warming Potential
AH	Albumen Height
AH	anterior horn
AH	adrenal hypoplasia
AH	Amphipathic Helix
AH	adenomatous hyperplasia
AH	absorptive hypercalciuria
AH	aniline hydrochloride
AHA	Autoimmune Haemolytic Anaemia
AHA	American Hospital Association
AHC	Adrenal Hypoplasia Congenital
AHCs	Anterior Horn Cells
AHF	Altered Hepatic Foci
AHF	Attitude History File
AHH	anosmia and hypogonadotropic hypogonadism
AHL	Acyl Homoserine Lactone
AHO	Albright Hereditary Osteodystrophy

AhR	Ability of Aromatic Hydrocarbon Receptor
AHR	Aryl Hydrocarbon Receptor
ahrq	Agency for Health, Research, and Quality
AHRR	Aryl Hydrocarbon Receptor Repressor
AHSRL	Arctic High Spectral Resolution Lidar
AI	Apoptosis Index
AI	Association Index
AI	Adiposity Index
AI	Aromatase Inhibitor
AI	Allele Imbalance
AI	allelic imbalance
AI	Amelogenesis imperfecta
AI	apoptotic index
AIBS	American Institute of Biological Sciences
AICE	American Institute of Chemical Engineers
AICR	American Institute for Cancer Research
AID	Artificial Insemination Donor
AIDS	Acquired Immune Deficiency Syndrome (see also SIDS and HIV)
AIED	Aland Island Eye Disease
AIEE	American Institute for Electrical Engineers
AIEOP	Associazione Italiana Ematologia Oncologia Pediatrica
AII	Angiotensin II
AIL	Avionics Integration Laboratories
AIL	Advance Intercross Line
AIM	Acute Infectious Mononucleosis
AIMBE	American Insitute for Medical and Biological Engineering
AIMs	Ancestry informative markers
AIMS	Australian Institute of Marine Science
AIN	Anal Intraepithelial Neoplasia
AINA	Arctic Institute of North America
AION	Anterior Ischaemic Optic Neuropathy
AIP	Acute Intermittent Porphyria
AIP	Astrophysikalisches Institut Potsdam
AIPS	Astronomical Image Processing System
AIRS	Atmospheric InfraRed Sounder (EOS)
AIRs	Acute Insulin Responses
AIS	Adenocarcinoma in Situ
AIS	Adolescent Idiopathic Scoliosis
AIS	Androgen Insensitivity Syndrome
AIS	Airborne Imaging Spectrometer
AISA	Acquired Idiopathic Sideroblastic Anemia
AIST	Advanced Industrial Science Technology
AJ	Astronomical Journal
AJ	adherens junction
AJ	Ashkenazi Jewish
AK	Adenosine Kinase
AK	Arginine kinase
AK	activated killer
AK	Aspartate kinase
AK	Adenylate Kinase

AK	Actinic Keratosis
ak	acetate kinase
AL	annulate lamellae
AL	Aeronomy Laboratory (Boulder, Colorado) (ERL)
AL	Angiotropic lymphoma
AL	Ad libitum
AL	Acute Leukemia
ALADIN	Atmospheric Laser Doppler Instrument
ALADIN	Interactive sky atlas developed by CDS Strasbourg
ALC	Anaplastic Large Cell
ALCL	Anaplastic Large Cell Lymphoma
ALCLs	Anaplastic Large Cell Lymphomas
ALD	alcoholic liver diseases
ALE/GAGE	Atmospheric Lifetime Experiment/Global Atmospheric Gases Experiment
ALERT	Automated Local Evaluation in Real Time
ALEXI	Atmospheric Land EXchange Inversion (CIMSS)
ALF	automated laser fluorescence
ALH	Atypical Lobular Hyperplasia
ALL	Adult Lymphoblastic Leukemia
ALL	Acute Lymphatic Leukemia
ALL	acute lymphoblastic lymphoma
ALL	Acute Lymphocytic
ALL	Acute Lymphoblastic
ALL	Acute Lymphocytic Leukemia
ALL	acute lymphoblastic leukosis
ALP	Automated Linkage Preprocessor
ALP	ATHEROGENIC LIPOPROTEIN PHENOTYPE
ALPEX	Alpine Experiment
ALPTRAC	High Alpine Aerosol and Snow Chemistry Study (EUROTRAC)
ALS	Amyotropic Lateral Sclerosis
ALSC	Adirondack Lake Survey Corporation
ALSPP	Atmospheric and Land Surface Processes Project
ALT	Radar Altimeter
ALT	Atypical Lipomatous Tumor
ALTs	Atypical Lipomatous Tumors
ALU	Arithmetic (and) Logic Unit
ALV	Avian Leukosis Virus
ALVs	Avian Leukosis Viruses
AM	Affected Male
AM	Acral Melanoma
AM	arbuscular mycorrhizal
AM	Admixture Mapping
AM	Alveolar Macrophage
AM	Amplitude Modulation
Am	Achillea Millefolium
AMA	American Medical Association
AMA	Advanced Maternal Age
AMAD	Activity Median Aerodynamic Diameter
AMANDA	Antarctic Muon And Neutrino Detector Array
AMC	Arthrogryposis Multiplex Congenita

AMD	Acid Maltase Deficiency
AMDM	Association of Medical Diagnostics Manufacturers
AMDT	Adjusted Maximum Dive Time
AME	Apparent Mineralocorticoid Excess
AMFR	Autocrine Motility Factor Receptor
AMI	Active Microwave Instrument
AMIA	The American Medical Informatics Association
AMIP	Atmospheric Model Intercomparison Project
AMLL	Acute Mixed Lineage Leukemia
AMLR	Autologous Mixed Lymphocyte Response
AMLR	Autologous Mixed Lymphocyte Reaction
AMLs	Acute Myelogenous Leukemias
AMM	Agnogenic Myeloid Metaplasia
AMML	Acute Myelomonocytic Leukemia
AMOG	Adhesion Molecule on Glia
AMOS	Automated Meteorological Observing System
AMOS	Air Force Maui Optical System
AMPS	Antarctic Mesoscale Prediction System
AMRIR	Advanced Medium Resolution Infrared Radiometer
AMRIR	Advanced Medium Resolution Imaging Radiometer
AMS	Archive Management Subsystem
AMS	American Meteorological Society
ams	atypical mole syndrome
AMSAS	AOA Meteorological Satellite Analysis System
AMSR	Advanced Microwave Scanning Radiometer
AMSR-E	Advanced Microwave Scanning Radiometer for EOS
AMSU	Advanced Microwave Sounder Unit (EOS)
AMSU	Advanced Microwave Sounding Unit
AMSU-A	Advanced Microwave Sounding Unit-A AMTS
AMTIC	Ambient Monitoring Technology Information Center
AMTS	Advanced Moisture and Temperature Sounder
AMU	Atomic Mass Unit
AMV	Avian Myeloblastosis Virus
AMV	Avian Myoblastosis Virus
AMW-DB	Archive of Multi-Wavelength Data
AN	Alkaline Nuclease
AN	accessory nuclei
AN	Anorexia Nervosa
An	Aspergillus Nidulans
ANA	Autoantibody to Nuclear Antigen
ANC	Absolute Neutrophil Count
ANDI	American Nitrox Divers Incorporated
ANF	Atrial Natriuretic Factor
ANL	The Department of Energy's Argonne National Laboratory in Argonne, Ill
ANL	Acute Nonlymphocytic Leukemia
ANLL	Acute Nonlymphoid Leukemia
ANN	Artificial Neural Network
ANNs	Artificial Neural Networks
ANO	Any Other
ANP	Atrial Natriuretic Peptide

ANRHRD	Air, Noise and Radiation Health Research Division
ANSI	American National Standards Institute, Inc.
ANT	Attention Network Test
AO	Airway obstruction
AO	aldehyde oxidase
AO	Acridine Orange
AO	announcement of opportunity
AO	active oxygen
AO	Amine Oxidase
AO	Agent Orange
AO&SS	Atmospheric, Oceanic and Space Sciences
AOA	Airborne Optical Adjunct
AOC	Allene Oxide Cyclase
AOCS	Attitude and Orbit Control and Measurement Subsystem
AOD	Autoimmune Ovarian Dysgenesis
AODC	Association of Offshore Diving Contractors
AOIPS	Atmospheric and Oceanographic Information Processing System
AOL	Airborne Oceanographic LIDAR
AOM	Acute Otitis Media
AOML	Atlantic Oceanographic and Meteorological Laboratory (Miami, Florida) (ERL)
AOS	Active Oxygen Species
AOS	Allene Oxide Synthase
AOS	Acquisition Of Signal
AOT	Aerosol Optical Thickness
AOT	Adenomatoid Odontogenic Tumour
ap	alkaline phosphatase
AP	Adenomatous POLYPs
AP	Alkaline Protease
AP	Antimicrobial Peptides
AP	Adaptor Protein
AP	accelerated phase
AP	Acid Phosphatase
AP	Anomalous Propagation
AP	Apple Proliferation
ap	arterial pressure
AP	Arbitrarily Primed
AP	acute pancreatitis
AP	amyloid plaques
APA	Administrative Procedure Act
APAFO	Advanced Particles And Fields Observer
APAG	Academic Policy Advisory Group
APAR	Absorbed Photosynthetically Active Radiation
APB	Alternative Pyrimidine Biosynthetic
APBD	adult polyglucosan body disease
APBSCT	Autologous Peripheral Blood Stem Cell Transplant
APC	Ambulatory Payment Class
APC	Academic Planning Council
APC	Adenomatosis Polyposis Coli
APC	Anterior polar cataract
APC	Activated Protein C

APC	Ateles Paniscus Chamek
APCR	Activated Protein C Resistance
APD	Avalanche Photo Diode
APE	Airborne Polar Experiment
APEC	Avian Pathogenic Escherichia Coli
APECED	Autoimmune Polyendocrinopathy-Candidiasis-Ectodermal Dystrophy
APF	Attitude Parameter File
APH	Attitude Pointing History
APhA	American Pharmaceutical Association
API	Application Programming Interface
APID	APPLICATION IDENTIFIER
aPKC	atypical protein kinase C
APKD	Adult Polycystic Kidney Disease
APL	Altered Peptide Ligand
APL	Acute Promyelocytic Leukemia
APL	Applied Physics Laboratory (at Johns Hopkins)
APL	Acute Progranulocytic Leukemia
APLP	Amplified Product Length Polymorphism
APLs	Acute Promyelocytic Leukemias
APM	Automatic Plate Measurement
APM	Academic Personnel Manual
APM	Affected Pedigree Member
APMI	American Powder Metallurgy Institute
APP	Amyloid Precursor Protein
APP	Abeta precursor protein
APP	AVHRR Polar Pathfinder
APPs	Acute Phase Proteins
APR	Acute Phase Response
APRE	Acute Phase Response Element
APS	Autoimmune Polyendocrine Syndromes
APSU	Austin Peay State University
APT	Automatic Picture Transmission
APTF	Admissions Processing Task Force
APTI	Air Pollution Training Institute
aPTTs	Activated Partial Thromboplastin Times
APU	Academic Program Unit
APU	Auxiliary Power Unit
APVS	Absent Pulmonary Valve Syndrome
AQCR	Air Quality Control Region (US) (environment)
AQS	Air Quality System
AR	Acrosome reaction
AR	adaptive response
AR	Aldose Reductase
AR	Androgen Receptor
AR	Aortic Regurgitation
AR	apoptotic rate
AR	Autosomal Recessive
AR	Aspect Ratio
ARA	AppleTalk Remote Access
ARA	Attitude Reference Assembly

ARA	American Rheumatism Association
ARC	Arctic Research Commission
ARC	Ames Research Center (NASA)
ARC	Arctic Radiation and Chemistry experiment
ARCD	Acquired Renal Cystic Disease
ARCI	Autosomal Recessive Congenital Ichthyosis
ARD	Adult Refsum Disease
ARDS	Adult Respiratory Distress Syndrome
ARDS	Acute Respiratory Distress Syndrome
ARE	Antioxidant Response Element
ARE	Androgen Response Elements
AREP	Assembly Representation
ARF	Acute Rheumatic Fever
ARF	An Ancillary Response File
ARF	Ancillary Response Function
ARF	Alternative Reading Frame
ARGOS	Argos Data Collection and Location System (France)
ARH	Autosomal Recessive Hypercholesterolemia
ARHSP	Autosomal Recessive Hereditary Spastic Paraplegia
ARIC	Atherosclerosis Risk in Communities
Ariel-5	UK X-Ray Astronomy Satellite launched 1974
Ariel-6	UK X-Ray Astronomy Satellite launched 1979
ARISTOTELES	Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite
ARJP	Autosomal recessive juvenile parkinsonism
ARM	Atmospheric Radiation Monitoring
ARM	Atmospheric Radiation Measurement (DOE program)
ARMD	Age-Related Macular Degeneration
ARMS	Amplification Refractory Mutation
ARNSHL	Autosomal Recessive Nonsyndromic Hearing Loss
Arnt	Ah Receptor Nuclear Translocator
AROA	Autosomal Recessive Ocular Albinism
ARP	Aldehyde Reactive Probe
ARPKD	Autosomal Recessive Polycystic Kidney Disease
ARPs	Affected Relative Pairs
ARPS	Advanced Regional Prediction System
ARRP	Autosomal Recessive Retinitis Pigmentosa
ARS	Antigen recognition sites
ARS	Acute Radiation Syndrome
ARS	Autonomous Replication Sequence
ARSLOE	Atlantic Remote Sensing Land/Ocean Experiment
ARSs	Autonomous Replication Sequences
ART	Assisted Reproductive Technology
ARTs	Assisted Reproductive Technologies
ARVC	arrhythmogenic right ventricular cardiomyopathy
arvd	arrhythmogenic right ventricular dysplasia
AS	Alagille Syndrome
as	Acid Succinate
AS	Active sleep
AS	Asperger Syndrome
AS	Aldosterone Synthase

AS	Anthranilate Synthase
AS	Ankylosing Spondylitis
AS	Alport syndrome
AS	autologous serum
AS	Argininosuccinate Synthetase
AS	Angelman Syndrome
AS	alternative splicing
AS	Asparagine Synthetase
AS	Aortic Stenosis
ASA	Antarctic Support Associates
ASA	Academic Staff Assembly
ASADA	Automated Smoke/Aerosol Detection Algorithm
ASAIO	American Society for Artificial Internal Organs
ASAP	Atypical Small Acinar Proliferation
ASAP	Aerospace Safety Advisory Panel
ASC	Ambulatory Surgery Center
ASCA	Advanced Satellite for Cosmology & Astrophysics
ASCA	Japanese X-Ray Astronomy satellite launched 1993
ASCII	American National Standard Code for Information Interchange
ASCII	American Standards Committee for Information Interchange
ASCP	American Society for Clinical Pharmacology and Therapeutics
ascrs	American Society of Cataract and Refractive Surgery's
ASCT	Autologous Stem Cell Transplantation
ASD	Atrial Septal Defect
ASD	Aspartate Semialdehyde Dehydrogenase
ASD	Autism Spectrum Disorder
ASDs	Atrial Septal Defects
ASE	Absence Status Epilepticus
ASE	Air-Sea Exchange experiment (EUROTRAC)
ASE	Aerospace Support Equipment
ASEAN	Association of Southeast Asian Nations
ASEC	Applied Solar Energy Corporation
ASF	Abdominal Subcutaneous Fat
ASF	African Swine Fever
ASF	Alaskan SAR Facility
ASFV	African Swine Fever Virus
ASG	Accessory Sex Glands
ASH	Asymmetric Septal Hypertrophy
ash	American Society of Hematology's
ASHOE	Airborne Southern Hemisphere Ozone Experiment
ASHP	American Society of Hospital Pharmacists
ASI	Agenzia Spaziale Italiana
ASI	Advanced Study Institute (NATO)
ASICs	Acid Sensing Ion Channels
ASIM	American Society of International Medicine
ASM	American Society for Microbiology
ASMCs	Arterial Smooth Muscle Cells
ASMD	Anterior Segment Mesenchymal Dysgenesis
ASMT	American Society for Medical Technology
ASOS	Automated Surface Observing System

ASP	Apoptosis Specific Protein
ASP	Agouti Signaling Protein
ASP	Audiogenic seizure Prone
Asp	The Abnormal Spindle Protein
ASPs	Affected Sibling Pairs
ASPS	Alveolar Soft-Part Sarcoma
ASPs	Acid Shock Proteins
ASQ	Alpha System Qualification
ASQ	Autism Screening Questionnaire
ASR	Airport Surveillance Radar
ASR	acoustic startle response
ASS	Arginosuccinate Synthetase
ASSA	Aminopterin Syndrome Sine Aminopterin
ASSIST	Articulation System Stimulating Interinstitutional Student Transfer
AST	Arterial Spin Tagging
AST	Antibiotic Sensitivity Testing
ASTER	Advanced Spaceborne Thermal Emission And Reflection Radiometer (EOS)
ASTERIX	X-Ray astronomy data analysis package for Starlink ADAM environment
ASTEX	Atlantic STratus EXperiment
ASTM	American Society for Testing and Materials (Philadelphia, Pennsylvania)
ASU	Astronomical Server URL
ASUC	Associated Students of the University of California
ASV	Avian Sarcoma Virus
AT	Autologous Transplantation
AT	The Ataxia Teleangiectasia
AT	Arabidopsis thaliana
AT&T	American Telephone & Telegraph
ATA	Alimentary Toxic Aleukia
ATC	Anaplastic Thyroid Cancer
ATCC	American Type Culture Collection
ATD	Autoimmune Thyroid Disease
ATD	ASPHYXIATING THORACIC DYSTROPHY
ATDD	Atmospheric Turbulence and Diffusion Division
ATF	anti-activating transcription factor
ATF	Aphid Transmission Factor
ATLAS	ACTIVITIES Atmospheric Laboratory for Applications and Science
ATLID	Atmospheric LIDAR
ATM	Ataxia Telangiectasia Mutant
ATM	Atmospheric Transport Model
ATM	Asynchronous Transfer Mode
ATMOS	Atmospheric Trace Molecules Observed by Spectroscopy
ATN	Acute Tubular Necrosis
ATP	Adult Treatment Panel
ATR	Acid Tolerance Response
ATS	applications technology satellite
ATS	Arterial Tortuosity Syndrome
ATSDR	Agency for Toxic Substance and Disease Registry
ATSR	Along-Track Scanning Radiometer
AU	Atomic Units
AU	Astronomical Unit

AU	Activity Units
AUL	Acute Undifferentiated Leukemia
AUM	Asymmetric Unit Membrane
AUP	Adjusted Unbiased Prediction
AURA	Association of Universities for Research in Astronomy, Inc.
AURIO	Auroral Imaging Observatory
AVCS	Advanced Vidicon Camera System
AVF	Abdominal Visceral Fat
AVHRR	Advanced Very High-Resolution Radiometer
AVHRR GAC	AVHRR Global Area Coverage
AVHRR LAC	AVHRR Local Area Coverage
AVIRIS	airborne visible and infrared imaging spectrometer
AVNIR	advanced visible and near-infrared radiometer
AVR	Acute Vascular Rejection
AVS	Aortic Valve Stenosis
AVTD	Anomalous Viscosity Time Dependence
AWACS	Airborne Warning And Control System
AWD	Abdominal Wall Defects
Awd	abnormal wing discs
AWD	Alive With Disease
AWI	Alfred Wegener Institute
AWIPS-90	Advanced Weather Interactive Processing System for the 90's
AWPD	Assessment and Watershed Protection Division
AXAF	Advanced X-Ray Astrophysics Facility
AXAF	Advanced X-Ray Astrophysics Facility, future NASA mission
AY	Academic Year
AZOOR	Acute Zonal Occult Outer Retinopathy
B-ISDN	Broadband Integrated Services Digital Network
BA	benzoic acid
BA	biliary atresia
BA	Bone Age
BA	Brucella Abortus
BAC	Bovine Artificial Chromosome
BAC	Boeing Aerospace Company
BACs	bacterial artificial chromosomes
BACT	Best Available Control Technology
BAD	Bipolar Affective Disorder
BADC	British Atmospheric Data Centre
BAEP	Brainstem Acoustic Evoked Potentials
BAEPs	Brain Stem Auditory Evoked Potentials
BAERs	Brainstem Auditory Evoked Responses
BAF	Bvg accessory factor
BAFME	Benign Adult Familial Myoclonic Epilepsy
BAHC	Biosphere Aspects of the Hydrological Cycle (IGBP programme)
BAL	Biphenotypic Acute Leukemia
BAL	Bronchial Alveolar Lavage
BANF	Bilateral Acoustic Neurofibromatosis
BAP	Bacterial Alkaline Phosphatase
BARC	Beltsville Agricultural Research Center
BAS	British Andrology Society

BAS	British Antarctic Survey
BASDAI	Bath Ankylosing Spondylitis Disease Activity Index
BASE-A	Biomass burning Airborne and Spaceborne Experiment-Amazonia
BASFI	Bath Ankylosing Spondylitis Functional Index
BASIC	Beginner's All-Purpose Symbolic Instruction Code
baud	one bit per second
BAV	Bicuspid Aortic Valve
BB	Bacterial Blight
BB	Borrelia burgdorferi
BBC	Bilateral Breast Cancer
BBD	Benign Breast Disease
BBM	anti-brush border membrane
BBS	Bulletin Board System
BBT	Basal Body Temperature
BBV	Black Beetle Virus
BBXRT	Broadband XRay Telescope
BC	Branhamella catarrhalis
BC	Bovine Conglutinin
BC	Binucleated Cells
BC	Brain Cancer
BC	biotin carboxylase
BC	Breast Cancer
BC	breast carcinoma
BC	blast crisis
BC	Burkholderia cepacia
BCAA	branched chain amino acids
BCAC	Basal Cell Adenocarcinoma
BCC	Basal Cell Carcinoma
BCC	British Coal Corporation
BCC	Burkholderia Cepacia Complex
BCCP	apo-biotin carboxyl carrier protein
BCCP	Biotin Carboxyl Carrier Protein
BCCs	Basal Cell Carcinomas
BCE	Bovine Capillary Endothelial
BCG	bacillus of Calmette and Guérin
BCM	Blue Cone Monochromacy
BCNS	Basal Cell Nevus Syndrome
BCP	Basic Calcium Phosphate
BCP	Basal Cell Papilloma
BCR	B Cell Receptor
BCR	Breakpoint Cluster Region
BCRP	Breast Cancer Resistance Protein
BCRS	Breakpoint Cluster Regions
BCS	Broadband Cable System (UW)
BCTV	Beet Curly Top Virus
BD	Birth Defects
BD	binding domain
BD	Bone Density
BD	Bipolar Disorder
BDA	Bile Duct Adenoma

BDC	Bellini Duct Carcinoma
BDGP	Berkeley Drosophila Genome Project
BDMV	Bean Dwarf Mosaic Virus
BDT	Binary Decision Tree
BDV	Borna Disease Virus
BDV	Border Disease Virus
BE	Branching Enzyme
BED	Bornholm Eye Disease
BEF	Bromine Efficiency Factor
BEI	Backscattered Electron Imaging (electron microscopy technique)
BEL	Bovine Embryonic Lung
BEN	Balkan endemic nephropathy
BER	Base Excision Repair (biology)
BEV	Baboon Endogenous Virus
BF	Basal Forebrain
BF	Bomb Factory
BF	Bacteroides Fragilis
BFCNs	Basal forebrain cholinergic neurons
BFF	Bovine Follicular Fluid
BFGF	Basic Fibroblast Growth Factor
BFH	Benign Familial Hematuria
BFIC	Benign Familial Infantile Convulsions
BFNC	Benign Familial Neonatal Convulsions
BHTA	British Healthcare Trades Industry
BIATEX	Biosphere-Atmosphere Exchange of Pollutants (EUROTRAC)
BIBEX	Biomass Burning Experiment (IGAC programme)
BIO	Bedford Institute of Oceanography
BIO	Biotechnology Industry Organization
BISA	Belgium Institute for Space Aeronomy (Belgium)
BIT	Binary Digit (either 0 Or 1)
BITNET	Because It's Time Network
BLAST	Basic Local Alignment Search Tool
BLCMD	BiLevel CoMmanD (DXS)
BLIS	Boundary Layer Instrumentation System
BMA	British Medical Association
BMFT	Bundesministerium für Forschung und Technologie (Germany)
BNL	Brookhaven National Laboratory
BNSC	British National Space Centre
BOARS	Board of Admissions and Relations with Schools
BOD	Biological Oxygen Demand
BODC	British Oceanographic Data Centre
BOL	Beginning of Life
BOREAS	Boreal Ecosystem Atmosphere Study
bpi	bits per inch
bps	bits per second
brdf	Bidirectional Reflective Distribution Function
BRG	Bureau des Ressources Génétiques
BRO	Bromine Monoxide
BS	Binary Star
BSE	Bovine Spongiform Encephalopathy

BSI	British Standards Institution
BSM	Baseline Spectroscopy
BTD	Brightness Temperature Difference
BTU	British Thermal Unit
BTW	By The Way
BuChE	ButyrylCholine Estérase
BUFR	Binary Universal Form for the Representation (of data)
BuRec	United States Bureau of Reclamation (government)
BUV	Backscattered UltraViolet
C	Centigrade
C	Celsius
CA	Cytogenetic Aberrations
CA	Constitutively Active
CA	Colorectal Adenoma
CA	Colanic Acid
CA	Clavulanic Acid
CA	Cyclopiazonic Acid
CA	Cytogenetic Abnormalities
CA	Cancer Antigen
CA	Carbonic Anhydrase
CA	Control area (EU) – The portion of the generation and transmission system controlled by a single transmission system operator. (See also TSO).
CA	Chromosome Analysis
CA	Chromatid Aberrations
CA	common antigen
CA	Candida albicans
CA	cerebellar atrophy
Ca	chromosome aberration
CA	Contagious agalactia
CA	Children Age
CA	Cerebellar Ataxia
CA	cytosine arabinoside
CA	Cavernous Angiomas
CAA	Chronic Aplastic Anemia
CAA	Clean Air Act (1970, amended in 1977, and again in 1990)
CAA	Cationic Amino Acid
CAA	Cerebral Amyloid Angiopathy
CAA	Congenital Aural Atresia
CAA	California Alumni Association
CAAS	Contracted Advisory & Assistance Services
CAC	Centre for Atmospheric Chemistry (York, Canada)
CAC	Coronary Artery Calcification
CACD	Central Areolar Choroidal Dystrophy
CACGP	Commission For Atmospheric Chemistry And Global Pollution
CAD	Computer-Aided Design
CAD	Cinnamyl Alcohol dehydrogenase
CAD	Coronary Artery Disease
CAD	Cold Agglutinin Disease
CAD	Coronary Atherosclerotic Disease
cad	Computer Aided Designer
CADC	Canadian Astrophysical Data Centre

CADIC	Centro Austral de Investigaciones Cientificas
CAE	Childhood Absence Epilepsy
CAF	Conotruncal Anomaly Face
CAFS	Conotruncal Anomaly Face Syndrome
CAH	Chronic Active Hepatitis
CAH	Congenital Adrenal Hyperplasia
CAH	Congenital Adrenal Hypoplasia
CAI	Codon Adaptation Index
CAI	Complete Androgen Insensitivity
CAIS	Complete Androgen Insensitivity Syndrome
CaK	Cell Adhesion Kinase
CAL	Calibration Access Layer
Cal-ISI	California Institutes for Science & Innovation
CAL/VAL	Calibration/Validation
CALAS	Cryptococcal Antigen Latex Agglutination System
CALGB	Cancer and Leukemia Group B
CALL	Common Acute Lymphoblastic Leukemia
CALLA	Common Acute Lymphocytic Leukemia Antigen
CALLA	common acute lymphoblastic leukemia antigen
CALPIRG	The California Public Interest Research Group
CALS	College of Agricultural and Life Sciences (UW–Madison)
CALTRANS	California Department of Transportation
CAM	Cell Adhesion Molecule
CAMEX	CMOS Amplifier and Multiplexing Chip
CAMEX	Convection and Moisture Experiment
cAMP	Childhood Asthma Management Program
cAMP	Cyclic Adenosine Monophosphate
CAMS	Calibrated Airborne Multispectral Scanner
CAMs	Cell Adhesion Molecules
CAN	Chronic Allograft Nephropathy
CAN	California Articulation Number
CANS	Central Auditory Nervous System
CANSO	California Articulation Number System Office
CAO	Chlorophyll A Oxygenase
CAP	College of American Pathologists
CAP	Capital Accumulation Provision
CAP	Catabolite Activator Protein
CAPD	Chronic Ambulatory Peritoneal Dialysis
CAPD	Continuous Ambulatory Peritoneal Dialysis
CAPE	Convective Available Potential Energy
CaPE	Convection and Precipitation/Electrification Experiment (STORM)
CAPE	Caffeic Acid Phenethyl Ester
CAPP	Concerted Action Polyp Prevention
CAPPI	Constant Altitude Plan Position Indicator
CAPS	Center for the Analysis and Prediction of Storms
CAPSTRANS	Centre for Asia Pacific Social Transformation Studies
CAR	Cytokinetic Actomyosin Ring
CAR	Cell Adhesion Regulator
CAR	Constitutive Androstane Receptor
CARA	Center for Astrophysical Research in Antarctica

CARDS	Comprehensive Aerological Reference Data Set
CARE	Cholesterol and Recurrent Events
CART	Cloud and Radiation Testbed (ARM)
CART	Classification And Regression Tree (method In Statistical Analysis)
CAS	Centre for Atmospheric Science (Cambridge, UK)
CAS	cellular apoptosis susceptibility
CASPR	Cloud and Surface Parameter Retrieval
CAT	Carbon Dioxide Absorption Technique
CAT	Common Arterial Trunk
CATS	Comparative Anchor Tagged Sequence
cAV	Coronary Artery Vasculopathy
CB	Ciliary Body
CB	Cajal Bodies
CB	cord blood
CB	carotid body
CB	Chromatoid Body
CBAH	Conjugated Bile Acid Hydrolase
CBB	Coomassie Brilliant Blue
CBB	Common Bacterial Blight
CBC	Complete Blood Count
CBCL	Child Behavior Checklist
CBD	Common Bile Duct
CBDMP	California Birth Defects Monitoring Program
CBER	Center for Biologics Evaluation and Research
CBF	Ciliary Beat Frequency
CBF	Cerebral Blood Flow
CBFB	Core Binding Factor Beta
CBI	Confederation of British Industries
CBL	Cord Blood Lymphocytes
CBN	Cellular Blue Nevi
CBO	Congressional Budget Office
CBPI	Cytokinesis-Block Proliferation Index
CBPP	Contagious Bovine Pleuropneumonia
CBS	classic Bartter syndrome
CBSCT	Cord Blood Stem Cell Transplantation
CBT	Cord Blood Transplant
CBV	Coxsackie B Viruses
CC	complete chimerism
CC	colorectal cancer
CC	cervical carcinoma
CC	Carney complex
CC	corpus callosum
CC	Colorectal Carcinoma
CC	Classical Cytogenetic
CC	congenital cataract
cc	Cellular Cycle
CC	Cumulus cells
CC	Cell Counts
CC	Cleavable Complex
CC	Clomiphene Citrate

CC	Cervical Cancer
CC	Conventional Cytogenetic
CC	Combined Cycle
CC	Condensed chromatin
CC	Colon Cancer
CCA	Common Carotid Artery
CCA	Conventional Cytogenetic Analysis
CCA	Cortical cerebellar atrophy
CCA	Congenital Contractural Arachnodactyly
CCA	Current Cost Accounting
CCA	Chromated Copper Arsenate
CCAM	Congenital Cystic Adenomatoid Malformation
CCB	Calcium Channel Blocker
CCBs	Calcium Channel Blockers
CCC	Cholangiocellular Carcinoma
CCC	California Community Colleges
CCD	Calcite Compensation Depth
CCD	Classic Cleidocranial Dysplasia
CCD	Central Core Disease
CCD	Charge Coupled Device - a device for the movement of electrical charge.
CCE	Comprehensive Clinical Examination
CCE	Charge Collection Efficiency
CCF	Current Calibration File
CCF	Cross-Correlation Function
CCFDN	Congenital cataracts facial dysmorphism neuropathy
CCGA	Coordinating Committee on Graduate Affairs
CCHB	Complete Congenital Heart Block
CCHS	Congenital central hypoventilation syndrome
CCI	Canadian Circumpolar Institute
CCITT	Comit? Consultatif International T?l?graphique et T?l?phonique
CCK	Cancer Center Karolinska
CCLRC	Council for the Central Laboratory of the Research Councils (UK)
CCLRC	Central Laboratory of the Research Councils
CCM	Cerebral Cavernous Malformation
CCM	community climate model
CCMV	Cowpea Chlorotic Mottle Virus
CCN	Cloud Condensation Nucleus
CCO	Cytochrome C Oxidase
CCP	Cytochrome C Peroxidase
CCR	Cassette Chromosome Recombinase
CCR	Carbon Catabolite Repression
CCR	Continuous Complete Remission
CCR	Complete Cytogenetic Remission
CCR	Complex Chromosome Rearrangement
CCR	Complete Cytogenetic Response
CCR	Cost-Charge Ratio
CCRCC	Clear Cell Renal Cell Carcinoma
CCRS	Canada Centre for Remote Sensing
CCS	Clinical Classification System
CCS	Chromatin Conformational State

ccs	clear cell sarcoma
CCST	California Council on Science & Technology
CCT	Computer Compatible Tape
CCTV	Closed-circuit television
CCV	Channel Catfish Virus
CD	circular dichroic
CD	Chemistry Division
CD	Crohn disease
CD	Chromatin Diminution
CD	Cowden Disease
CD	Cone Degeneration
CD	Congenital Defects
CD	Complete Deficiency
CD	Canavan disease
CD	Campomelic dysplasia
CD	Compact Disc
CD	Celiac Disease
CD	cytosine deaminase
CD	cytochalasin D
CD	cortical dysplasia
CD	Coeliac Disease
CD	Conduct Disorder
CD	Conjugated dienes
CD-ROM	Compact Disk-Read Only Memory
CD-ROM	Compact Disc-Read-Only Memory
cda	congenital dyserythropoietic anemia
CDA	Command and Data Acquisition
CDART	Conserved Domain Architecture Retrieval Tool
CDC	Child Development Centre
CDC	Collecting duct carcinoma
CDC	Centers for Disease Control
CDC	Cell Division Cycle
CDC	Cell Division Control
CDCR	Conceptual Design and Cost Review
CDCS	Cri Du Chat Syndrome
CDD	Cytidine Deaminase
CDF	Cerebellar Deficient Folia
CDF	Cation Diffusion Facilitator
CDF	Common Data Format
cdfg	California Department of Fish and Game's
CDGE	Constant Denaturant Gel Electrophoresis
CDH	Congenital Diaphragmatic Hernia
CDI	Color Doppler Imaging
CDIAC	Carbon Dioxide Information Analysis Cente
CDIC	cytoplasmic dynein intermediate chain
CDL	California Digital Library
CdLS	Cornelia De Lange Syndrome
CDM	Clean Development Mechanism
CDM	Common Data Model
CDM	Chemically Defined Medium

CDOS	Customer Data and Operations System
CDR	Complementary determining regions
CDR	Common Deleted Region
CDRH	Center for Devices and Radiological Health (Food & Drug Administration)
CDS	Correlated Double Sampler
CDS	commonly deleted segment
CDS	Centre de Donnees Stellaires
CDT	Cytolethal Distending Toxin
CDT	Catalogues and Databases Team
CDTs	cytolethal distending toxins
CDV	Canine Distemper Virus
Ce	cornified envelope
Ce	ciliary epithelium
CE	cellular extract
CE	Cooperative Extension
CE	Cholesterol Ester
Ce	Caenorhabditis elegans
CE	colony efficiency
CE	conventional electrophoresis
CE	central element
CE	clonal evolution
CEA	Collie Eye Anomaly
CEC	Chick Embryo Cells
CEC	Commission of the European Communities ;
CEC	critical electrolyte concentration
CEC	Commission of European Communities (see EC, EEC)
CECs	cerebral endothelial cells
CEES	Committee on Earth and Environmental Sciences
CEF	chick embryo fibroblast
CEF	Chicken embryonic fibroblast
CEFs	chicken embryonic fibroblasts
CEI	Converting Enzyme Inhibitor
CEL	Carboxyl Ester Lipase
CEL	Chronic Eosinophilic Leukemia
CEL	Conserved Effector Locus
CEN	Committee European de Normalisation
CENELEC	European Committee for Electromechanical Standardisation
CENR	Committee on Environment and Natural Resources
CEO	Centre for Earth Observation
CEOS	Committee on Earth Observation Satellites
CEP	Congenital Erythropoietic Porphyria
CEQA	California Environmental Quality Act
CER	Common Eliminated Region
CERES	Clouds and Earth's Radiant Energy System
CES	Cat Eye Syndrome
CES	Central Excitatory State
CESD	Cholesterol Ester Storage Disease
CESH	Comparative Expressed Sequence Hybridization
CET	Central England Temperature
CETP	Cholesteryl Ester Transfer Protein

CF	competence factor
CF	Culture fluid
CF	Cystic Fibrosis
CF	Clastogenic factor
Cf	Cladosporium fulvum
CF	Correction Factor
CF	culture filtrate
CF	colony formation
CFA	Cyclopropane fatty acids
CFA	colony forming assay
CFA	Centre for Astrophysics
CFAg	cystic fibrosis antigen
CFAs	Colonization factor antigens
CFC	Continuous-Flow Centrifugation
CFC	GM-colony forming cell
CFC	Chloroflourocarbon
CFC	Chloro Fluoro Carbon
CFC-11	CCl3F, trichlorofluoromethane, Freon-11
CFC-12	CCl2F2, dichlorodifluoromethane, Freon-12
CFCs	Chlorofluorocarbons
CFF	Cystic Fibrosis Factor
CFH	Complement Factor H
CFHT	Canada-France-Hawaii Telescope, on Mauna Kea
CFP	Cyan Fluorescent Protein
CFPs	culture filtrate proteins
CFR	Code of Federal Regulations
CFRI	Central Fuel Research Institute (India)
CFS	Cubic Feet per Second
CFS	Cancer Family Syndrome
CFSs	common fragile sites
CFTC	Commodity Futures Trading Commission
CFTD	Congenital Fiber-Type Disproportion
CFTR	cystic fibrosis transmembrane regulator protein
CG	Ciliary Ganglion
CG	cortical granule
CG	Chorionic Gonadotropin
CG	Complementation Group
CG	Celera Genomics Corporation
CG	Center of Gravity (DXS)
CG	Comparative Genometrics
CGAM	Centre for Global Atmospheric Modelling
CGAP	Cancer Genome Anatomy Project
CGAT	Chromaffin Granule Amine Transporter
CGC	Climate and Global Change
CGCL	Central Giant Cell Lesion
CGCP	Canadian Global Change Program
CGD	Chronic Granulomatous Disease
CGH	Comparative Gene Hybridization
CGH	Congenital Generalized Hypertrichosis
CGI	Common Gateway Interface

CGI	Clinical Global Impression
CGKD	Complex Glycerol Kinase Deficiency
CGL	Congenital Generalized Lipodystrophy
CGL	Chronic Granulocytic Leukemia
CGM	Computer Graphics Metafile
cGMP	Cyclic Guanosine Monophosphate
CGN	Cerebellar Granule Neurons
CGS	Contiguous Gene Syndromes
CH	Cluster Headache
CH	congenital hypothyroidism
CH	Cerebral Hemispheres
ch	Channel Header
CH	contact hypersensitivity
CH	Calponin homology
CH	Chronic Hepatitis
CH	Channel
CH	congenital hydrocephalus
CH	cuticular hydrocarbon
CH	Centrosome hyperamplification
CH	cystic hygroma
CH	chloral hydrate
CH3CL	Methyl Chloride
CH4	Methane, Natural Gas
CHA	Congenital Hypoplastic Anemia
CHAMEX	Cloud Height And Motion EXperiment
CHAMMP	Computer Hardware, Advanced Mathematics and Model Physics Program
CHAT	Choline Acetyltransferase
CHB	Chronic Hepatitis B
CHB	congenital heart block
CHC	Clathrin Heavy Chain
CHD	Coronary Heart Disease
CHD	Congenital Heart Disease
CHD	Congenital Heart Defect
CHED	Congenital Heredity Endothelial Dystrophy
CHF	Congestive Heart Failure
CHF	Calibration History File
CHH	Crustacean Hyperglycemic Hormone
CHI	California Healthcare Institute
CHIME	College of Healthcare Information Management Executives
CHL	Classic Hodgkin Lymphoma
CHLC	Cooperative Human Linkage Center
CHP	Combined heat and power
CHPA	Consumer Healthcare Products Association
CHR	Complete Hematologic Remission
CHR	complete hematologic response
CI	centromeric index
CI	cardiac involvement
CI	Cephalic Index
CI	chromosomal instability
CI	Cytoplasmic incompatibility

CI	Cerebral Infarction
CI	Continuous Infusion
CI	Chromosome Index
Ci	Coccidioides immitis
CIAP	Climatic Impact Assessment Program
CIASTA	Cooperative Institute for Atmospheric Sciences and Terrestrial Applications
CIBD	Chronic Inflammatory Bowel Disease
CIC	Circulating Immune Complex
CICA	Center for Innovative Computer Applications
CICS	Cooperative Institute for Climate Studies (U.Maryland)
CID	Combined Immunodeficiency Disease
CID	Combined Immune Deficiency
CIDC	Climatology Interdisciplinary Data Collection
CIDI	Composite International Diagnostic Interview
CIDP	Chronic inflammatory demyelinating polyneuropathy
CIDS	Circular Intensity Differential Scattering
CIE	Chinese Institute of Electronics
CIFAR	Cooperative Institute for Arctic Research
CIIP	Chronic Idiopathic Intestinal Pseudoobstruction
CIIT	Chemical Industry Institute of Toxicology
CIMO	Commission for Instruments and Methods of Observation
CIMSS	Cooperative Institute for Meteorological Satellite Studies
CIN	Conjunctival Intraepithelial Neoplasia
CIN	Cervical Intraepithelial Neoplasia
CIN	Chronic Idiopathic Neutropenia
CINO3	chlorine nitrate
CIO	Chief Information Officer
CIP	Cast-In-Place
CIRA	COSPAR International Reference Atmosphere
CIRAC	Canadian Institute for Research in Atmospheric Chemistry
CIRES	Cooperative Institute for Research in Environmental Sciences (US)
CIRRIS	Cryogenic Infrared Radiance Instrument for Shuttle
CIRRUS	Cloud InfraRed Radiometer for UnESS
CIRTL	Center for the Integration of Research, Teaching, and Learning
CIS	Carcinoma in Situ
CISH	Chromosome in Situ Hybridisation
CISS	Chromosome In Situ Suppression
CIT	California Institute of Technology (Pasadena, CA)
CITA	Center for IT Accommodation (GSA)
CITA	Canadian Institute for Theoretical Astrophysics
CITE	Cargo Integration and Test Equipment (DXS)
CITE	Chemical Instrumentation Test and Evaluation
CITE	Chemical Instrument Test and Evaluation (NASA GTE)
CITECH	Center for Information on Technology in Healthcare
CITRIS	Center for Information Technology Research in the Interest of Society
CIV	Chilo Iridescent Virus
CK	Creatine Kinase
CKI	casein kinase I
CKII	Casein Kinase II
Cl	chromosome loss

CL	Cleft Lip
Cl	Crithidia luciliae
CL	cystic lymphangioma
CLA	Cutaneous Lymphocyte Antigen
CLAES	Cryogenic Limb Array Etalon Spectrometer
CLAG	Cytoadherence Linked Asexual Gene
CLAH	Congenital Lipoid Adrenal Hyperplasia
CLASS	Cross-Chain Loran Atmospheric Sounding System
CLAVR	Clouds from AVHRR
CLD	Cholestatic Liver Disease
CLD	Chronic Lung Disease
CLD	Congenital Lactase Deficiency
CLD	combined lipase deficiency
CLD	Chronic Liver Disease
CLG	Certified Local Government
CLH	Cutaneous Lymphoid Hyperplasia
CLIVAR	Climate Variability and Predictability program
CLL	Chronic Lymphoid Leukaemia
CLMA	Clinical Laboratory Management Association
CLNS	Connectionless Network Services
ClO	Chlorine Monoxide
CLP	Chromosome Length Polymorphism
CLP	Chlorine Loading Potential
CLRC	Central Laboratory of the Research Councils (UK)
CLRI	Central Leather Research Institute
CLS	Cloud Lidar System
CLSM	confocal laser scan microscope
CM	Congenital Malformations
CM	Capillary malformation
CM	cytoplasmic membrane
CM	cisterna magna
Cm	Centimetre
CM	complete mole
CM	contrast media
CM	cutaneous melanoma
Cm	Cardiac Myxoma
CMA	China Meteorological Administration
CMA	Chemical Manufacturers Association
CMAP	Compound Muscle Action Potential
CMAP	Climate Modeling, Analysis and Prediction Program
CMCs	cultured mast cells
CMD	Cartilage Matrix Deficiency
CMD	Congenital Myotonic Dystrophy
CMD	Congenital Muscular Dystrophy
CMDL	Climate Monitoring And Diagnostics Laboratory (NOAA Boulder
CME	Cystoid Macular Edema
CMG	Computer Measurement Group
CMHC	Community Mental Health Center
CMK	Cytidine Monophosphate Kinase
CML	Chronic Myelogenic Leukemia

CML	Chronic Myeloid Leukemia
CMP	Competitive Medical Plan
CMS	Control & Monitoring System
CMS	Configuration Management System
CMS	Correctional Medical Services
CMU	Concrete Masonry Unit
CNA	Comisión Nacional del Agua (Mexico)
CNES	Centre National d'Etudes Spatiales (France)
CNG	Compressed natural gas
CNR	Consiglio Nazionale delle Ricerche (Italy)
CNRM	Centre National de Recherches Météorologiques(France)
CNRS	Centre National de la Recherche Scientifique (France)
CNS	Central Nervous System
CNSI	California NanoSystems Institute
CO	Carbon Monoxide
CO-I	Co-Investigator
CO2	Carbon Dioxide
COADS	Comprehensive Ocean Atmosphere Data Set
COADS	Comprehensive Ocean-Atmosphere Data Set
COAPEC	Coupled Ocean-Atmosphere Processes and European Climate
COARE	Coupled Ocean-Atmosphere Response Experiment (TOGA and WCRP)
COARE	Coupled Ocean-Atmosphere Research Experiment (TOGA)
COBE	Cosmic Background Explorer Satellite (NASA)
COC	Council of Chancellors
COC	Committee on Committees
COCIR	Coordination Committee of the Radiological and Electromedical Industries
CODAR	COrrelation Detection And Ranging
CoFR	Certificate of Flight Readiness
CoHMEX	Cooperative Huntsville Meteorological Experiment
COMET	Cooperative Program for Operational Meteorology Education and Training (NOAA and UCAR)
COMSAT	Communications Satellite Corporation
CON	Certificate Of Need
CONACYT	Consejo Nacional de Ciencia y Tecnologia
CONUS	Continental U.S.
CONUS	Continental United States (48 Contiguous States and DC)
COR	Committee on Research
COR	Council of Research
CORP	Corporation
CORSA	Cosmic Radiation Satellite
COSPAR	Committee on Space Research (ICSU)
COSSH	Congress of the Social Sciences and Humanities
COSTAR	Corrective Optics Space Telescope Axial Replacement
cotf	Commission on the Future
COTS	Commercial Off the Shelf Software
COVC	Council of Vice Chancellors
CPC	Climate Prediction Center (NWS Center)
CPEC	California Postsecondary Education Commission
CPG	Calibration Proposal Generation
cpi	characters per inch
CPL	Cloud Physics Lidar

CPR	Cardiopulmonary Resuscitation
CPSC	Consumer Product Safety Commission
CPU	Central Processing Unit
CRADA	Cooperative Research and Development Agreement (with National Institutes of Health)
CRCC	Cancer Research Coordinating Committee
CREST	Cooperative Remote Sensing Science and Technology Center (Puerto Rico)
CRF	Calibration Resource File
CRF	Case Report Form
CRG	Council for Responsible Genetics
CRI	Climate Research Institute (Oklahoma State University)
CRI	Committee on Research Initiatives
CRIS	Cross-track Infrared Sounder
CRO	Cathode-Ray Oscilloscope
CRO	Contract Research Organization
CrO2	Chromium Oxide
CRREL	Cold Regions Research and Engineering Laboratory (COE)
CRS	Congressional Research Service
CRT	Cathode Ray Tube (type of TV)
CRU	Climate Research Unit (East Anglia)
CRYSYS	Cryospheric System
CS	Computer Science
CS&S	Computer Sciences and Statistics (UW-MSN)
CSA	Canadian Space Agency
CSA	Canadian Standards Association (like UL)
CSEPA	Chinese State Environment Protection Agency (China)
CSES	Center for the Study of Earth from Space (Univ of Colorado)
CSF	Cerebrospinal Fluid
CSG	Clock Sequence Generator
CSG	Council of State Governments
CSI	Construction Specifications Institute
CSI	Coastal Studies Institute (LSU)
CSIM	Cosmic Simulator
CSIRO	Commonwealth Scientific & Industrial Research Organization (Australia)
CSIS	Centralized Storm Information System
CSM	Comprehensive System Model
CSMP	Climate System Modeling Project
CSREES	Cooperative State Research, Education, and Extension Service
CST	Central Standard Time (UTC-6 Hours)
CST	Convective-Stratiform Technique
CSU	Colorado State University (Fort Collins)
CSU	Cleveland State University
CTD	Conductivity, Temperature and Depth
CTD	Chemical Technology Division (ORNL)
CTD	Conductivity-Temperature-Depth
CTE	Charge Transfer Efficiency
CTI	Charge Transfer Inefficiency
CTM	Chemical Transport Model
CTP	Cloud-Top Pressure
CTS	Committee on Teaching of Science
CTS	Canadian Technology Satellite

CTTCA	California Technology Trade & Commerce Agency
CU	University of Colorado at Boulder
CUA	Circumpolar Universities Association
CUCEA	Council of the University of California Emeriti Association
CV	Cataclysmic Variable
CV	Curriculum Vitae
CVS	Concurrent Version System
CVS	Concurrent Versions System
CW	Continuous Wave
CWA	Clean Water Act (1977)
CWB	Central Weather Bureau (Taiwan)
CWS	Committee on World Standards
CZCS	Coastal Zone Color Scanner
CZMA	US Coastal Zone Management Act
D-E	Dermoepidermal
D/C	diarrhea constipation
DAAC	Distributed Active Archive Center
DAC	Digital to Analogue Conversion
DADS	Data Archive and Distribution System
DAL	Data Access Layer
DAMTP	Department of Applied Mathematics and Theoretical Physics (Cambridge)
DAN	Diver’s Alert Network
DANR	Division of Agriculture and Natural Resources
DAO	Data Assimilation Office (NASA)
DAP	Dual Admissions Program
DAR	Division of Atmospheric Research (CSIRO)
DARPA	Defense Advanced Research Projects Agency (US)
DASD	Direct Access Storage Device
DAT	Digital Audio Tape
Db	Diversion Box
DBI	Digital Bus Interface
DBMS	Database Management System
DBMS	Data Base Management System
DBP	Defined Benefit Plan
DBRA	Division of Biometry and Risk Assessment
DBU	Digital Bus Unit
DC	Detector Controller (DXS)
DC	Direct Current
DCA	Division of Community Assistance
DCIEM	Defence and Civil Institute of Environmental Medicine
DCM	Dispersion Compensation Module
DCP	Defined Contribution Plan
DCP	Data Collection Platform
DCR	Dedicated Control Room
DCS	Data Collection System (NOAA Polar Orbiting Satellites)
DCTD	Division of Cancer Treatment and Diagnosis
DDD	Detailed Design Document
DDE	Distributive Data Environment (McIDAS)
DDS	Domestic Data Service
DDT	Dichloro Diphenyl Trichlorethane

DE	Detector Electronics (DXS)
DEC	Digital Equipment Corporation
DEC	Declination
DEED	Minnesota Department of Employment and Economic Development
DEFA	Digital Event Filter and Address Encoder
DEM	Digital Electronics Module
DEMA	Diving Equipment Manufacturers Association
DEMUX	Demultiplexer
DENIS	Deep Near-Infra-red Survey
DES	Divers Environmental Survey
DESY	Deutsches Elektronen-Synchrotron
DFAD	Digital Feature Analysis Data (dee-fad)
DFRC	Dryden Flight Research Center
DG	Dentate Gyrus
DG	Directorate-General (EU) (government)
DGVM	Dynamic Global Vegetation Model (GAIM)
DHHS	Department of Health and Human Services (U.S.)
DHS	Data Handling Subsystem
DIAL	Differential Absorption Lidar (laser Radar Sensing)
DIFAX	Digital Facsimile
DILHR	Department of Industry Labor and Human Relations
DIN	Deutsches Institut fuer Normung
DIN	Deutsches Institut fur Normung
DIS	Data and Information Systems (EOS and IGBP)
disc	optical media (CDs)
DISEL	Diseno e Ingenieria de Systemas Electronicos
disk	magnetic media (floppies)
DIU	Detector Interface Unit (DXS)
DLC	Distributed Learning Center
DLCF	Data Link Control Field
DLESE	The Digital Library for Earth System Education
DLL	Dynamic Link Libraries
DLR	Deutsche Forschungsanstalt fur Luft-und Raumfahrt (Germany)
DLS	Dynamic Limb Sounder
DLS	Division of Laboratory Services
DLT	Digital Linear Tape
DMA	U.S. Defense Mapping Agency
DMAC	Diving Medical Advisory Committee
DMAP	Digital MAPping, charting and geodesy analysis program
DME	Durable Medical Equipment
DMERC	Durable Medical Equipment Regional Carrier
DMI	Danish Meteorological Institute
DMIC	Deputy Meteorologist-In-Charge (NWS)
DMS	Dynamic Message Sign
DMS	DiMethylSulphide
DMSP	Defense Meteorological Satellite Program (U.S.)
DNA	Deoxyribose Nucleic Acid
DNAG	Decade of North American Geology
DNH	Division of Natural Heritage
DNR	Department of Natural Resources

DNS	Domain Name System
DNV	Det Norske Veritas
do	Diving Officer
DO	Dissolved Oxygen
DOA	Department of Administration (US)
DOC	Doctor
DOD	United States Department of Defense
DODS	Distributed Ocean Data System
DOE	United States Department of Energy (government)
DOF	Department of Finance
DoH	Department of Health (various countries)
DOI	Department of the Interior (US)
DOIT	Department Of Information Technology (UW-MSN)
DOJ	Department of Justice (US)
DOL	United States Department of Labor
DORIS	Doppler Orbitography And Radiopositioning Integrated By Satellite (EOS)
DOS	United States Department of State
DOS	Disk Operating System
DOT	Department of Transport
DOY	Day of Year
DP	Data Products
DP	dermal papilla
DPD	Data Processing Division
DPI	Department of Public Instruction
DPI	Derived Product Imagery
DPP	Digital Preprocessor
DPR	Dual Precipitation Radar
DPS	Detector Power Supply
DPS	Division of Planetary Science
DPSS	Data Product Screening Sub-system
DPSS	Data Processing Services Subsystem
DPSST	Data Product Screening Software Team
DPU	data processing unit
DPU	digital processing unit
DPV	Diver Propulsion Vehicle
DRG	Diagnosis-Related Groups
DRH	Division of Radiological Health
DRIBU	DRIfting BUoy data
DRS	Data Relay Satellite
DS2	Second Dark Spot (Neptune)
DSB	Direct Sounding Broadcast
DSC	Direct Satellite Communications
DSDP	Deep-Sea Drilling Project
DSMA	Division of Small Manufacturers Assistance
DSMB	Data Safety Monitoring Board
DSN	Deep Space Network - network of large antennas and communication facilities.
DSP	Digital Signal Processor
DST	Data Systems Test
DSWM	Division of Solid Waste Management
DTE	Data Terminal Equipment

DTED	Digital Terrain Elevation Data (dee-ted)
DTS	Digital Termination Service
DTS	Digital Transmission Systems, Inc.
DTS	Data Transfer System
DU	Dobson Unit
DUART	Dual Universal Asynchronous Receiver/Transmitter
DUD	duodenal ulcer disease
DWPC	Division of Water Pollution Control
DWS	Doppler Wind Sensor
DWS	Division of Water Supply
DXRB	Diffuse X-Ray Background
DXS	Diffuse X-Ray Spectrometer
Dyax	Dyax Corp.
E&CE	Electrical and Computer Engineering
E-LIDAR	Experimental LIDAR
EAA	Experiment Aircraft Association
EAD	Equivalent Air Depth
EADS	Engineering and Data Analysis System
EAP	Education Abroad Program
EARTHKAM	Earth Knowledge Acquired By Middle-schoolers
EAS	External Anal Sphincter
EASOE	European Arctic Stratospheric Ozone Experiment
EATD	European Association of Technical Divers
EBC	Executive Budget Committee
EBCDIC	Extended Binary-Coded Decimal Interchange Code
EBI	European Bioinformatics Institutetute
EBTC	Edison BioTechnology Center
EBW	Electron Beam Welding
EC	European Commission
EC	European Community
EC	executive committee
ECA	Effective Cloud Amount
ECB	Educational Communications Board
ECC	Electrochemical Concentration Cell
ECCLS	European Committee on Clinical Laboratory Standards
ECMWF	European Centre for Medium-Range Weather Forecasts
ECOSOC	Economic and Social Council of the United Nations
ECRI	Emergency Care Research Institute
ECS	EOSDIS Core System
ED	Department of Education (US)
ed	Event Designator
ED	Energy Division
EDAC	Error Detection And Correction
EDAS	Eta Data Assimilation System
EDC	EROS Data Center
EDH	EPIC Data Handling Unit
EDIS	Environmental Data and Information Service
EDMA	European Diagnostics Manufacturer's Association
EDU	Event Detection Unit
EE	End-to-End

EEC	European Economic Commission
EESC	Equivalent Effective Stratospheric Chlorine
EFM	Electrostatic Force Microscopy
EFPIA	European Federation of Pharmaceutical Industries and Associations
EFSC	Eastern Food Science Conference
EGA	Enhanced Graphics Adapter
EGSE	Electrical Ground Support Equipment
EHWD	Enhanced Hot Water Drill
EIA	Extended Interaction Amplifier
EIGA	European Industrial Gases Association
Einstein	Einstein Observatory
EIR	Environmental Impact Report
EJ	Expansion Joint
ELC	Eligibility in the Local Context
ELS	Eastern Launch Site
EM	Electromagnetic
EMAE	EPIC MOS Analogue Electronics
EMAIL	Electronic Mail
EMC	Environmental Modeling Center
EMCH	EPIC MOS Focal Camera Head Unit
EMCR	EPIC MOS Control,Event Analyzer and Recognition Unit
EMCS	EPIC MOS Camera System
EMCU	EPIC MOS Camera Head Unit
EMCV	EPIC MOS Low Voltage Converter Unit
EMDM	European Medical Device Manufacturer
EMDU	EPIC MOS Data Handling Unit
EMEX	Equatorial Mesoscale Experiment
EMF	Electromotive Force
EML	Environmental Measurements Laboratory (DOE)
EMSS	Einstein Medium Sensitivity Survey
EMT	Extraordinary Masochistic Tendencies (joke At Expense Of Emergency Medical Technicians)
END	Equivalent Narcotic Depth
ENSO	El Niño/Southern Oscillation
ENVISAT	European Space Agency Environmental Satellite
EODRS	Earth observation data retrieval system
EOF	Empirical Orthogonal Function
EOL	End Of Life
EOS	Earth Observing System (U.S.)
EOSAT	Earth Observation Satellite Co.
EOSDIS	Earth Observing System Data and Information System (sic FCW 9/97)
EOSP	Earth Observing Scanner Polarimeter
EPA	Environmental Protection Agency (US)
EPAct	Energy Policy Act of 1992 (US)
EPCE	EPIC pn Control Electronics Unit
EPCH	EPIC pn Focal Camera Head Unit
EPCS	EPIC pn Camera System
EPCU	EPIC pn Camera Head Unit
EPDH	EPIC pn Data Handling Unit
EPDU	EPIC pn Data Handling Unit
EPEA	EPIC p-n Event Analyser

EPG	Engineering Proposal Generation
EPIC	European Photon Imaging Camera
EPOS	Enhanced Preferred Observation Schedule
EPS	European Polar Satellite
EPTOX	Extraction Procedure Toxicity
EPVC	EPIC pn Low Voltage Converter Unit
ER-2	Earth Resources, #2
ERA	Employee Reimbursement Account
ERAD	Economic and Regulatory Analysis Division
ERBE	Earth Radiation Budget Experiment
ERBS	Earth Radiation Budget Satellite
ERD	Ecological Research Division (DOE and OHER)
ERICA	Experiment on Rapidly Intensifying Cyclones Over the Atlantic
ERL	Environmental Research Laboratory (NOAA)
ERM	EPIC Radiation Monitor
ERMD	EPIC Radiation Monitor Detector
ERME	EPIC Radiation Monitor Electronics
ERMS	EPIC Radiation Monitor System
EROS	Earth Resources Observing System
ERS	Earth Resources Satellite
ERS	ESA Remote Sensing Satellite
ERS	Environmental Research Satellite
ERSAF	Environment Remote Sensing Analysis Facility
ERSC	Environmental Remote Sensing Center (IES)
ERSIR	Earth Resources Shuttle Imaging Radar
ESA	European Space Agency
ESD	Environmental Sciences Division (ORNL)
ESDAC	European Space Data Center
ESDD	Earth Science Data Directory
ESE	Earth Science Enterprise
ESIS	European Southern Observatory
ESL	English as a second language
ESMR	Electrically Scanning Microwave Radiometer
ESOC	European Satellite Operations Center
ESOC	European Satellite Operation Centre
ESPI	European Space Policy Institute
ESSA	Environmental Science Services Administration (preceded NOAA)
ESSHC	European Social Science History Conference
ESTEC	European Space TEchnical Center
ETAC	Environmental Technical Applications Center (USAF)
ETS	Educational Testing Service
ETTP	East Tennessee Technology Park
EU	European Union (1994; formerly referred to as the EEC or EC)
EUCOMED	European Confederation of Medical Suppliers Associations
EUD	Exploration of the Universe Division
EUDRA	European Drug Regulatory Authorities Network
EUMETSAT	European Organization for the Exploitation of Meteorological Satellites
EUV	Extreme Ultraviolet Vertical
EUV	Extreme Ultra-Violet 2
EUVE	Extreme Ultraviolet Explorer (NASA Satellite)

EUVE	Extreme Ultra-Violet Explorer
EVA	Extra-Vehicular Activity
EVC	Executive Vice Chancellor
EXOSAT	European X-Ray Observatory Satellite
EXPORT	European eXport of Precursors and Ozone by long-Range Transport
EXPRESSO	Experiment for Regional Sources and Sinks of Oxidants
EXSAS	Extended Scientific Analysis System
f&a	Facilities and Administrative
FACS	Facilities Assignment and Control System
FAHS	Federation of American Health Systems
FASTEX	Fronts and Atlantic Storm-Track EXperiment
FAUI	Federation of Australian Underwater Instructors
FBTR	Fast Breeder Test Reactor
FCCC	For the Framework Convention on Climate Change
FCOS	Flight Computer Operating System (Orbiter)
FD	Flight Dynamics
FDA	Food Drug Administration
FDAMA	FDA Modernization Act of 1997
FDDI	Fibre Distributed Data Interface
FDH	Fixed Dynamical Heating
FDLI	Food and Drug Law Institute
FDR	Flight Dynamics Room
FDRG	Faculty Discipline Review Group
FET	Field Effect Transistor
FFM	Full Face Mask
FFRDC	Federally Funded Research & Development Center
FFT	Fast Fourier Transform
FFW	Feet of Fresh Water
FGP	Faculty Grants Program
FIFE	First ISLSCP Field Experiment
FIFO	First In, First Out
FIMR	Finnish Institute of Marine Research
FIRE	First ISCCP Regional Experiment
FIRETRACC	Firn Record of Trace Gases Relevant to Atmospheric Chemical Change
FIRST	Far Infrared Space Telescope
FITS	Flexible Image Transport System
FM	Frequency Modulator
FNRS	Fonds National de la Recherche Scientifique (Belgium)
FOM	Figure Of Merit
FOV	Field Of View (satellite)
FSA	Flexible Spending Account
FTC	Federal Trade Commission (U.S.)
FTE	Full Time Equivalent
FTOOLS	FITS-based software utilities developed at GSFC
FTP	File Transfer Protocol
FTs	File Transfer System
FWHM	Full Width, Half Maximum
FY	Fiscal Year
G	Gram (g)
GAC	Global Area Coverage

GAIM	Global Analysis, Interpretation and Modeling
GAO	Government Accountability Office [formerly the General Accounting Office]
GARP	Global Atmospheric Research Program (WMO, ICSU, and NOAA)
GATT	General Agreement on Tariffs and Trade (government)
GB	Gigabyte
GBps	Gigabits per second
GCC	Global Change Category
GCDIS	US Global Change Data and Information System
GCE	Ground-base Cloud Experiment (EUROTRAC)
GCF	Ground Calibration File
GCM	General Circulation Model
GCOS	Global Climate Observing System (WMO, IOC, UNEP, and ICSU)
GCP	Good Clinical Practice
GCRP	Global Change Research Program
GCTE	Global Change and Terrestrial Ecosystems Program of the IGBP
GEDEX	Greenhouse Effect Detection Experiment
GEMS	Global Environmental Monitoring System (UNEP)
GEMS	Great Expectations in Math & Science Program
GENEMIS	Generation of European Emission Data (EUROTRAC)
Geosat	Geodesy Satellite (Navy)
GERB	Geostationary Earth Radiation Budget Experiment
GEWEX	Global Energy And Water Cycle EXperiment (WCRP)
GFDL	Geophysical Fluid Dynamics Laboratory (NOAA US)
Gflops	Billions of Floating Point Instructions per Second
GFURD	Ground Facilities User Requirements Document
GGI	GPS Geoscience Instrument
GGS	Global Geospace Science
GHTF	Global Harmonization Task Force
GHz	Gigahertz
GIMMS	Global Inventory Modeling and Monitoring Study
Ginga	Japanese X-Ray astronomy mission launched 1987
GIS	Geographic Information System
GISS	Goddard Institute for Space Studies (NASA)
GISST	Global sea Ice Coverage and Sea Surface Temperature
GLAS	Geoscience Laser Altimeter System
GLI	Global Imager
GLOMAC	Global Modelling of Atmospheric Chemistry (EUROTRAC)
GLOSS	Global Sea Level Observing System (of IOC)
GLP	Good Laboratory Practice
GLRS-A	Geoscience Laser Ranging System-Altimeter (see GLAS)
GLRS-R	Geoscience Laser Ranging System-Ranger
GMP	Good Manufacturing Practice
GMS	Geostationary Meteorological Satellite (Japan)
GMSLP	Global Mean Sea Level Pressure
GMT	Greenwich Mean Time (Zulu)
GO	Guest Observer
GO	General Observer
GOES	Geostationary Operational Environmental Satellite
GOME	Global Ozone Monitoring Experiment
GOMOS	Global Ozone Monitoring by Occultation of Stars

GOMR	Global Ozone Monitoring Radiometer
GOOS	Global Ocean Observing System (IOC, UNESCO, WMO, and ICSU)
GOS	Geomagnetic Observing System
GOSTA	Global Ocean Surface Temperature Atlas
GPC	Global Processing Center
GPCP	Global Precipitation Climatology Project
GPS	Global Positioning System (ex-NAVSTAR)
GPSDR	Global Positioning System Demonstration Receiver
GRD	Government Relations Director
GRID	Global Resource Information Database (UNEP)
GRO	Gamma-Ray Observatory
GSC	Guide Star Catalog
GSE	Ground Support Equipment
GSFC	Goddard Space Flight Centre
GSFC	Goddard Space Flight Center (Greenbelt, MD)
GSI	Graduate Student Instructor
GSITT	Segment Integration and Test Team
GSM	Ground Segment Manager
GSR	Graduate Student Researcher
GSRR	Ground Segment Requirements Review
gt	Guaranteed Time
GTCE	Global Tropospheric Chemistry Experiment
GTE	Global Tropospheric Experiment
GTI	Good Time Interval
GTS	Global Telecommunications System (WMO and
GUI	Graphical User Interface (goo-ey)
GWP	global warming potential (climate)
H/K	Housekeeping
H2O	Water (vapor)
H2O2	Hydrogen Peroxide
HAACP	Hazard Analysis Critical Control Points Program
HadCM	Hadley Center Model
HadRT	Hadley Center Radiosonde temperature
HALLIP	Heterogeneous and Liquid Phase Processes (EUROTRAC)
HALOE	Halogen Occultation Experiment
HAPEX	Hydrological Atmospheric Pilot Experiment
HBr	Hydrogen Bromide
hc	Heater Controller
HCFA	Health Care Financing Administration
HCFCs	Hydrochlorofluorocarbons
HCHO	formaldehyde (also written as CH2O)
HCIS	Health Care Information System
HCl	Hydrogen Chloride
HCMM/AEM-1	Heat Capacity Mapping Mission/Applications Explorer Mission
HCN	Hydrogen Cyanide Nitrogen
HCPCS	Health Care Common Procedure Coding System
HDF	Hierarchical Data Format
HDIF	Health Care Data Interchange Format
HDP	Human Dimensions of Global Environmental Change
HDU	Header Data Unit

HE	High Energy
HEAO-1	NASA X-Ray Astronomy Mission
HEASARC	High Energy Astrophysics Science Archive Research Centre
HED	High Energy Detector
HEDIS	Healthplan Employee Data and Information
HER	High Energy Resolution
HEW	Half Energy Width
HF	High Frequency
HF	Hydrogen Fluoride
HFC	HydroFluoroCarbon
HFMA	Healthcare Financial Management Association
HHS	Health and Human Services Department
HIAA	Health Insurance Association of America
HIB	Health Insurance Bureau (Japan)
HIBCC	Health Industry Business Communications Council
HIDA	Health Industry Distributors Association
HIMSS	high-resolution microwave spectrometer sounder
HIMSS	Healthcare Information and Management Systems Society
HIPAA	Health Insurance Portability and Accountability Act of 1996
HIRA	Health Industry Representatives Association
HIRDLS	HIgh-Resolution Dynamics Limb Sounder (EOS)
HIRIS	High Resolution Imaging Spectrometer
HIRLAM	High-Resolution Limited Area Model
HIRS	High-resolution Infrared Radiation Sounder
HIS	Health Information Systems
HIV	Hair Is Vanishing. Amusing alternative interpretation (thanks EP) contrasting with the seriousness of the more usual meaning of Human Immunodeficiency Virus.HIVIHusband Is Village Idiot. (ODSA) Classic nurses' shorthand.
HIV	Human Immunodeficiency Virus I
HK	HouseKeeping Data
HKD	Housekeeping Data
HMMR	High-resolution Multifrequency Microwave Radiometer
HMO	Health Maintenance Organization
HNO3	Nitric Acid
HOCl	Hypochlorous Acid
HOP	High Output Paraffin
HOPPS	Hospital Outpatient Prospective Payment System
HOx	odd hydrogen (OH and H2O2)
HPB	Health Protection Board (Canada)
HRDI	High Resolution Doppler Imager
HRI	High Resolution Imager
HROI	High Resolution Optical Instrument
HRPT	High Resolution Picture Transmission
HRSA	U.S. Health Resources and Services Administration
HSPC	Human Subjects Protection Committee
HSQB	Health Standard and Quality Bureau
HST	Hubble Space Telescope
HTML	Hyper Text Markup Language
HTR	High Time Resolution
HTRM	High Time Resolution Mode
HTTP	Hypertext Transfer Protocol
https	HyperText Transfer Protocol Secure

HV	High Voltage
HYREX	Hydrological Radar Experiment
Hz	cycles per second (hertz)
I&R	Instruction & Research
I&T	Integration and Testing
I&T WG	Integration and Test Working Group
IA	Interactive
IAPM	International Association of Medical Prosthesis Manufacturers
IAS	Interactive Analysis Subsystem
IASI	Improved Atmospheric Sounding Interferometer
IAU	International Astronomical Union
IBIS	Image on-Board INTEGRAL Spacecraft
IC	Instrument Controller
ICAIR	International Centre for Antarctic Information and Research
ICAS	Intersegmental Committee of the Academic Senate
ICB	Instrument Control Bus
ICC	Instrument Control Center
ICC	Intersegmental Coordinating Committee
ICD	Interface Control Document
ICD-9-CM	International Classification of Diseases, 9th Edition
ICE	International Cometary Explorer
ICF	Instrument Control Facility
ICH	International Conference of Harmonization
ICOLC	International Consortium of Library Consortia
ICR	Indirect Cost Recovery
ICS	Instrument Command Sequence
ICSU	International Council of Scientific Unions
ICU	Intensive Care Unit
ICU	Instrument Controller Unit
ICWG	International Coordination Working Group
Id	IDentifier
IDC	Indirect Costs
IDE	Investigational Device Exemption
IDL	Interactive Data Language
IDOH	Instrument Data Operations Handbook
IDS	Interdisciplinary Science
IDTF	Independent Diagnostic Testing Facility
IEA	International Energy Agency (Paris)
IEC	International Electrotechnical Commission
IEEE	Institute of Electrical and Electronic Engineers, Inc.
IEOS	International Earth Observing System
IES	Institute of Environmental Sciences
IFCC	International Federation of Clinical Chemists
IFOP	Instrument Flight Operation Procedures
IFOP	Instrument Flight Operation Plan
IFOV	Instantaneous Field Of View
IFS	Integrated Forecast System
IFS	SSC-SOC Interface Sub-system
IGAC	International Global Atmospheric Chemistry Program of the IGBP
IGAP	International Global Aerosol Program

IGBP	International Geosphere-Biosphere Programme
IGETC	Intersegmental General Education Transfer Curriculum
II	Interdisciplinary Investigator
ILAS	Improved Limb Atmospheric Spectrometer
ILE	Institute for Labor and Employment
IMAU	Institute for Marine and Atmospheric Research Utrecht
IMB	Investigator of Micro-Biosphere
IMDA	Independent Medical Distributors Association
IMG	Interferometric Monitor of Greenhouse Gases
IMPAC	Intersegmental Major Preparation Articulated Curriculum
IMS	Information Management System (LTPP)
INDA	Investigational New Drug Application
INPA	Instituto Nacional de Pesquisas da Amazonia (Brazil)
INPAC	Institute for Nuclear and Particle Astrophysics and Cosmology
INPE	Instituto Nacional de Pesquisas Espaciais (Brazil)
INRA	Institut National de Recherche Agronomiques (France)
INSA	Institut National des Sciences Appliques (France)
INT	Isaac Newton Telescope
INTEGRAL	International Gamma-Ray Astrophysics Laboratory
IOA	Institute Of Astronomy (Cambridge)
IOC	Intergovernmental Oceanographic Commission
IOLM	International Organization of Legal Metrology
IOSDL	Institute of Oceanographic Sciences, Deacon Laboratory
IOSH	Institution of Occupational Safety and Health
IOTP	International Ozone Trands Panel
IP	Internet Protocol
IPA	Individual Practice Association
IPA	Institute for Polyacryclate Sciences
IPAR	Intercepted Photosynthetically Active Radiation
IPC	Imaging Proportional Counter
IPCC	Intergovernmental Panel on Climate Change (WMO and UNEP)
IPE	Institute of Physics of the Earth
IPEI	Ionospheric Plasma and Electrodynamics Instrument
IPEM	Institute of Physics and Engineering in Medicine
IPF	Immediate Parameter File
IPOC	International Partner Operations Center
IPP	Instrument Programmable Parameter
IPY	International Polar Year
IR	Infrared
IRAS	Infrared Astronomy Satellite
IRB	Institutional Review Board
IRI	International Research Institute for Climate Prediction
IRICP	International Research Institute for Climate Prediction
IRIS	Incorporated Research Institution for Seismology
IRIS	Infrared Interferometer Spectrometer
IRMM	Institute for Reference Materials and Measurements
Irts	Infrared Temperature Sounder
ISA	Institute for System Analysis
ISA	Instrument Society of America
ISAMS	Improved Stratospheric and Mesospheric Sounder

ISAS	Institute of Space and Astronautical Sciences (Japan)
ISCCP	International Satellite Cloud Climatology Project
ISCCP	International Satellite Cloud Climatology Program
ISDN	Switching Digital Network
ISEE	International Sun-Earth Explorer
ISI	Infrared Space Observatory
ISI	International Statistical Institute
ISI	Institute for Scientific Information
ISI	Institutes for Science and Innovation
ISIM	Instrument Simulator
ISLSCP	International Satellite Land Surface Climatology Project
ISME	Instrument Software Maintenance Environment
ISO	International Organization for Standardization
ISO 14155	Current Widely Accepted Standard
ISS	Instrument Software System
ISS	Integrated Switching System
ISSC	International Social Science Council
ISSP	Institute for Social Sciences and Philosophy
IST	integrated systems test
IST	Instrument Support Terminal
ISTAHC	International Society of Technology Assessment in Health Care
ISTP	International Solar Terrestrial Physics
ISU	International Space University
ISVF	Instrument Validation Facility
ISY	International Space Year (1992)
ITCZ	Inter-Tropical Convergence Zone
ITCZ	Intertropical Convergence Zone (of Seawater)
ITE	Institute for Terrestrial Ecology
ITIR	Infrared Thermal Imaging Radiometer (renamed ASTER)
ITT	Integration and Test Team
ITTP	Information Technology and Telecommunication Policy
IUCRP	Industry University Cooperative Research Program
IUPAC	International Union of Pure and Applied Chemistry
IV&V	independent verification and validation
IWC	Instream Waste Concentration
IWG	Investigators Working Group
IWGDMGC	Interagency Working Group on Data Management for Global Change
J.D.	Juris Doctor degree
J.S.D.	Doctor of the Science of Law
Jaame	Japanese Association for the Advancement of Medical Equipment
JAMA	Journal of the American Medical Association
JANET	Joint Academic Network
JCAHO	Joint Committee on the Accreditation of Healthcare Organizations
JCCT	Joint Commission on Commerce and Trade (US-China)
JCEE	Joint Conference of EARMA and Euroscience
JCMM	Joint Centre for Mesoscale Meteorology
JD	Julian Day
JEM	Japanese Experiment Module
JEM-X	Joint European Monitor for X-rays
JEOS	Japanese Earth Observing Satellite

JERS-1	Japanese Earth Remote-sensing Satellite-1
JET-X	Joint European Telescope for X-ray astronomy
JETRO	Japan External Trade Organization
JFET	junction field effect transistor
JFMDA	Japan Federation of Medical Device Associations
JGOFS	Joint Global Ocean Flux Study (IGBP programme)
JHIT	Joint Healthcare Information Technology Alliance
JIF	Japan-Indonesia Science and Technology Forum
JIM	Job Information Memorandum
JMA	Japan Meteorological Agency
JOI	Joint Oceanographic Institutions, Inc.
JOIDES	Joint Oceanographic Institutions for Deep Earth Sampling
JOP	Jupiter Orbiter Probe
JPL	Jet Propulsion Laboratory (California Institute of Technology) (NASA)
JPOP	Japanese Polar Orbiting Platform
JRC	Joint Research Center
JSC	Johnson Space Center (Houston, TX)
K	Kelvin (absolute temperature scale)
K-S	Kolmogorov-Smirnov statistic
KAL	Keep Alive Loop
KaNuPP	Karachi Nuclear Power Plant
KB	Kilobyte: One thousand and twenty-four bytes kbps kilo bit per second
KBps	KiloBytes per second
kbps	kilobits per second
keV	kilo electron volts
kg	Kilogram
KHz	kilohertz (1000 cycles per second)
kJ	kilojoule (energy measure)
Km	Kilometer (1,000 meters)
KNMI	Koninklijk Nederlands Meteorologisch Instituut
KOPRI	Korea Polar Research Institute
KORDI	Korea Ocean Research and Development Institute
Kw	Kilowatt (one thousand watts) (measurement)
LAC	Local Area Coverage
LACTOZ	Laboratory Studies of Chemistry Related to Tropospheric Ozone (EUROTRAC)
LAGEOS	Laser Geodynamic Satellite
LAMBADA	Large Scale Atmospheric Moisture Balance of Amazonia using Data Assimilation (BAHC/GEWEX)
LAN	Local Area Network
LANDSAT	Land Remote-Sensing Satellite
LANL	Los Alamos National Laboratory
LaRC	Langley Research Center (NASA)
LASER	Light Amplification By Stimulated Emission Of Radiation (cf. Maser)
LAWS	Laser Atmospheric Wind Sounder (NASA)
LBNL	Lawrence Berkeley National Laboratory (US)
LCD	Liquid Crystal Display
lcliymuucadulfw.s	le cock la in your mouth until u choke and die u lazy fucking whore. slut
LDO	Locally Designated Officer
LDRD	Laboratory-Directed Research and Development
LE	Low Energy
LED	Low Energy Detector

LED	Liquid Emitting Diode
LEDPA	Least Environmental Damaging Plan Alternative
LEFI	Local Electric Field Instrument
LEGRI	Low Energy Gamma-Ray Imager
LEOP	Launch and Early Orbit Phase
LERTS	Laboratoire d'Etudes et de Recherches en TeledetectionSpatiale (France)
LF	Low Frequency
LH	Labor-Hour
LHV	lower heating value
LIDAR	Lander Light Detection and Ranging
LIGG	Lanzhou Institute of Glaciology and Geocryology
LIMS	Limb Infrared Monitor of the Stratosphere
LIS	Lightning Imaging Sensor
LITE	Lidar In-space Technology Experiment
LL.M.	Master of Laws degree
LLC	Limited Liability Partnership
LLNL	The Department of Energy's Lawrence Livermore National Laboratory in Livermore, California
LMSC	Lockheed Missiles and Space Corporation
LMSS	Lunar Mapping and Survey System
LOICZ	Land Ocean Interactions in the Coastal Zone (IGBP)
LORAN	Long-Range Navigation
LORAN	Long Range Navigational System
LOS	Loss of Signal
LPG	Liquid Petroleum Gas
LPLWS	Launch Pad Lightning Warning System
LQHUW	Large Quantity Handlers of Universal Waste
LR	Laser Retroreflector
LRA	Laser Retroreflector Array
LRDP	Long Range Development Plan
LRPT	low-resolution picture transmission
LSPDF	Life Science Payload Development Facility
LSSL	Life Sciences Space Laboratory
LSU	Louisana State University
LTMS	Local Time Management System
lu	Leicester University
LVS	Launch Vehicle Simulator
LWIR	Long-Wavelength Infrared
LWIR	long-wavelength (thermal) infrared
M	Million
ma	Mirror Assembly
ma	Medical Alley
MAESA	Measurements for Assessing the Effects of Stratospheric Aircraft
MAFI	Medical Alert Foundation International
MAGSAT	Magnetic Field Satellite
MAGSAT	Magnetometer Satellite
MAHLOVS	Middle and High Latitudes Oceanic Variability Study
MAP	Mesoscale Alpine Programme
MAPS	Measurement of Atmospheric Pollution from Satellites
MASER	microwave amplification by stimulated emission of radiation
MassMEDIC	Massachusetts Medical Device Industry Council

MB	Millibar(s)
MB	Megabyte
MBBNet	Minnesota Biomedical Business Network
Mbps	Megabits per second
MCC	Mission Control Center (JSC)
McIDAS	Man-computer Interactive Data Access System
MCP	Multi Channel Plate
MCP	Microchannel Plate
MCP	Meteorological Communications Package
MCR	Main Control Room
MD	Medium Frequency
MDA	Medical Device Amendments
MDC	Major Diagnostics Category
MDCK	Madin-Darby Canine Kidney
MDD	Medical Device Directive
MDDI	Medical Device and Diagnostics Industry
MDMA	Medical Device Manufacturers Association
MDR	Medical Device Register
MDR	Medical Device Reports
MDS	Medium Deep Survey
MDT	Maximum Dive Time
MEDEC	Medical Devices Canada
MedGV	Germany's Medical Equipment Safety Law
MEDMARC	Medical Device Material Assurance and Reinsurance Company, Ltd.
MeDSuN	Medical Device Surveillance Network
MEI	Medical Economic Index
MEM	Meteoroid Exposure Module
MENARG	Middle East and North Africa Research Group
MEO	Mid Earth Orbit
MEPED	medium energy proton and electron detector
MERIS	Medium Resolution Imaging Spectrometer
MERSAT	Meteorology And Earth Observation Satellite
MESSR	Multispectral Electronic Self-Scanning Radiometer
METEOR	USSR Operational Weather Satellite
METEOSAT	Geosynchronous Meteorology Satellite (ESA)
MeV	mega electron volts
MF/MAGNOLIA	Magnetic Field Experiment
MFA	Manned Flight Awareness
MFCS	Mathematical Foundations of Computer Science
MFPE	Mission from Planet Earth
MGLS	Marine Geoscience Leadership Symposium
MGMA	Medical Group Management Association
MH	Message Handling
MHS	Microwave Humidity Sounder
MHW	Ministry of Health and Welfare
MIAA	Medical Industry Association of Australia
MICR	Magnetic-Ink Character Recongnition
MIDAS	Munich Interactive Data Analysis System
MIP	Mission Implementation Plan
MIP	Minimum Ionising Particle

MIPAS	Michelson Interferometric Passive Atmosphere Sounder
MIPS	Merritt Island Press Site
MIR	Management Information Report
MIRD	Mission Implementation Requirements Documents
MISR	Multi-angle Imaging Spectro-Radiometer (EOS)
MIT	Massachusetts Institute of Technology (U.S.)
MITI	Ministry of International Trade & Industry (Japan)
MITRE	Massachusetts Institute of Technology Research Establishment
MJD	Modified Julian Date
mks	meter-kilogram-second (measurement system; replaced by SI) (preferred over "MKS")
ML	Maximum-Likelihood
MLOPEX	Mauna Loa Observatory Photochemistry Experiment
MLS	Microwave Limb Sounder (EOS)
mm	Millimeter
mm	Mirror Model
MMA	Minnesota Medical Association
MMDA	Michigan Medical Device Association
MMDB	Mirror Metrology Database
MMI	Man-Machine Interface
MMIC	Medical Manufacturers' Information Council
MNBIO	Minnesota Biotechnology
MOC	XMM Mission Operation Centre
MOD	Maximum Operating Depth
mod	Mission Operations Department
MODB	MOC Operational Database
MODIS	Moderate Resolution Imaging Spectroradiometer
MODIS-N	Moderate Resolution Imaging Spectrometer-Nadir
MODIS-T	Moderate Resolution Imaging Spectrometer-Tilt
MOHMATN	Met Office Historical night Marine Air Temperature
MOHSST	Met Office Historical Sea Surface Temperature
MOL	Manned Orbital Laboratory
MOM	Mission Operations Manager
MOP	Mortgage Origination Program
MOPH	Ministry of Public Health
MOPITT	Measurements Of Pollution In The Troposphere (EOS)
MOS	Metal Oxide Semi-conductor
MOS-1	Marine Observation Satellite (Japan)
MOSPO	Mobile Satellite Photometric Observatory
MOSS	Manned Orbital Space Station
MOSS	Market-Oriented Sector Selective
MOTIE	Ministry of Trade, Industry, and Energy (Korea)
MOU	Memorandum of Understanding (an MOU between Food & Drug Administratin and a regulatory agency in another country allows mutual recognition of inspections)
MOUT	Message Out
MOZIAC	Measurement of Ozone on Airbus in-service Aircraft
MP	Mission Planning
MPE	Max Planck Institut fur Extaterrestrische Physik, Garching
MPE	Mission to Planet Earth
MPI	Max Planck Institut (Germany)
MPI	Minnesota Project Innovation
MPIA	Max Planck Institut für Aeronomie (Germany)

MPIC	Max Planck Institut für Chemie (Germany)
MPS	Materials Processing in Space
MPU	Mission Planning Unit
MRC	Medical Research Council
MRF	Met Office Research Flight
MRI	Magnetic Resonance Imaging
MRI	Meteorlogical Research Institute (Japan)
MRIF	Multicampus Research Incentive Fund
MRT	Mission Readiness Test
MRU	Multicampus Research Unit
MSDS	Material Safety Data Sheets
MSFC	Marshall Space Flight Center (Huntsville AL)
MSIM	Mirror Simulator
MSLP	Mean Sea Level Pressure
MSS	Mission Support System
MSSL	Mullard Space Science Laboratory, College London
MST	Mesosphere Stratosphere Troposphere (Radar)
MSU	Memphis State University
MSU	Microwave Sounding Unit
MSW	Municipal Solid Waste
MT	Measured Time
MTBE	Methyl Tert-butyl Ether
MTDC	Modified Total Direct Costs
MTI	Minnesota Technology Inc
MTPE	Mission To Planet Earth
MTPPI	Medical Technology and Practice Patterns Institute
MTS	Microwave Temperature Sounder
MTSU	Middle Tennessee State University's
MUX	Multiplexer
MVCA	Minnesota Venture Capital Association
MWIR	medium-wavelength infrared
N2O	nitrous oxide (anesthetic)
N2O5	nitrogen pentoxide, nitric anhydride
NAAQS	National Ambient Air Quality Standards (US)
NABR	National Association for Biomedical Research
NACD	National Association for Cave Diving
NACNEMS	North American Cooperative Network of Enhanced Measurement Sites
NAD	Nicotinamide Adenine Dinucleotide
NAD	Nitric Acid Dihydrate
NAEI	National Atmospheric Emission Inventory (UK)
NAFTA	North American Free Trade Agreement
NAG	Numerical Algorithms Group Inc.
NAGRA	Native American Graves Repatriation Act
NAHC	National Association of Home Care
NAHIT	National Alliance for Health Information Technology
NAI	No Action Indicated (Most Favorable Food & Drug Administration Post-inspection Classification)
NAM	National Association of Manufacturers
NAMES	National Association of Medical Equipment Services
NAREGI	National Research Grid Initiative
NARSTO	North American Research Strategy for Tropospheric Ozone

NAS	United States National Academy of Sciences
NAS	National Academy of the Sciences
NASA	National Aeronautic & Space Administration
NASA	National Aeronautics and Space Administration (US)
NASDA	National Space Development Agency of Japan
NASP	National Aerospace Plane
NASPY	North American Society of Electro Physiology and Pacing
NASSH	North American Society for Sport History
NAT	Nitric Acid Trihydrate (polar Stratosphere Cloud Aerosol)
NAVSTAR	Navigation Satellite Timing & Ranging
NBII	National Biological Information Infrastructure
NBIOME	Northern Biosphere Observation and Modeling Experiment
NBIS	Northern Biosphere Information System
NCAR	National Center for Atmospheric Research (US)
NCBI	National Center for Biotechnology Information
NCC	Network Control Center (GSFC)
NCCLS	National Committee for Clinical Laboratory Standards
NCDC	National Climatic Data Center
NCEP	National Centers For Environmental Prediction (form. NMC; NWS Center)
NCI	National Cancer Institute, USA
NCOS	National Commission on Space
NCSC	National Council of Senior Citizens
NCSU	North Carolina State University
NCTRS	Network Command and Telemetry Router System
ND	NASA Document
NDA	New Drug Application
NDBC	National Data Buoy Center
NDC	National Diving Council
NDIU	Network Data Interface Unit
NDO	National Diving Officer
NDPD	National Data Processing Division (EPA)
NDSC	Network for the Detection of Stratospheric Change
NDSTC	Naval Dive and Salvage Training Center
NDVI	Normalized Difference Vegetation Index
NED	Network of Egghead Divers
NEDU	Naval Experimental Diving Unit
NEFCO	Nordic Environment Finance Corporation
NEIC	National Enforcement Investigations Center
NEJAC	National Environmental Justice Advisory Council
NEMA	National Electric Manufacturer's Association
NEMS	NASA Equipment Management System
NERC	National Environmental Research Council
NERI	National Environmental Research Institute
NESDIS	National Environmental Satellite, Data, and Information Service
NESHAP	National Emission Standards for Hazardous Air Pollutants
NETC	National Environmental Technology Centre (UK)
NEXRAD	Next-Generation Weather Radar (NWS)
NGDC	National Geophysical Data Center (NOAA)
NGI	Norwegian Geotechnical Institute
NH	Northern Hemisphere

NH3	Ammonia
NHC	United States National Hurricane Center
NHGRI	National Human Genome Research Institute
NHIB	National Health Insurance Bureau (Taiwan)
NHLBI	National Heart, Lung, and Blood Institute
NHRI	National Hydrology Research Institute
NIC	National Ice Center
NIEHS	National Institute of Environmental Health Sciences (National Institutes of Health)
NIEO	New International Economic Order
NIES	National Institute For Environmental Studies (Japan)
NIF	National Ignition Facility
NIGEC	National Institute for Global Environmental Change
NIGMS	National Institute Of General Medical Sciences (NIH)
NIH	NATIONAL INSTITUTE OF HEALTH
NILU	Norsk Institutt for Luftforskning
NILU	Norwegian Institute for Air Research
Nimbus	NASA Meteorological Satellites (1 through 7)
NINA	Norwegian Institute for Nature Research
NIOSH	National Institute for Occupational Safety and Health
NIPR	National Institute of Polar Research
NIR	Near Infrared
NIRP	National Institute for Radiation Protection
Nisdn	Narrowband Integrated-Services Digital Network
NIST	National Institute of Standards & Technology (US)
NIST	National Institute of Standards and Technology
NISTEP	National Institute of Science and Technology Policy
NIWA	National Institute of Water and Atmospheric Research, New Zealand
NLN	National League for Nursing
nm	Nanometer
NMAI	National Museum of the American Indian
NMAM	NIOSH Manual of Analytical Methods
NMC	National Meteorological Center (US)
NMDC	National Medical Device Coalition
NNF	National Nanofabrication Facility
NNPI	Naval Nuclear Propulsion Information
NNSA	National Nuclear Security Administration
NO	Nitric Oxide
NO2	Nitrogen Dioxide
No3	Nitrate Radical
NOAA	National Oceanic and Atmospheric Administration (US)
NODC	National Oceanographic Data Center (NOAA)
NODIS	NSSDC Online Data and Information System Services System
NODS	NASA Ocean Data System
NORDA	Naval Ocean Research and Development Activity
NORSAR	Norwegian Seismic Array
NOS	National Ocean Service
NOSS	National Oceanic Satellite System
NOx	Nitrogen Oxide
NOy	total active nitrogen
NPD	NASA Policy Directive

NPI	Norwegian Polar Institute
NPOESS	National Polar-Orbiting Operational Environmental Satellite System
NPOP	NASA Polar Orbiting Platform
NRC	National Research Council (Canada)
NRC	National Response Center
NRCS	Natural Resources Conservation Service
NREL	National Renewable Energy Laboratory (formerly SERI)
NRL	Naval Research Laboratory
NRS	Natural Reserve System
NSC	Norwegian Space Center
Nscat	Nasa Scatterometer Project
NSF	National Sanitation Foundation
NSI	Nordic Sami Institute
NSIDC	National Snow and Ice Data Center (University of Colorado, Boulder)
NSSDC	National Space Science Data Center (Greenbelt, MD)
NSSL	National Severe Storms Laboratory
NSTS	National Space Transportation System
NSTX	Neosaxitoxin
NTP	National Toxicology Program
NTS	Nevada Test Site
NUST	National University of Science and Technology
NWP	Numerical Weather Prediction
NWRI	National Water Research Institute (Canada)
NWS	National Weather Service (formerly U.S. Weather Bureau)
O2	Oxygen
O3	Ozone
OAB	Osservatorio Astronomico di Brera
OAC	Orbital Activation and Checkout
OAD	Orbit and Attitude Division
OAI	Official Action Indicated (serious Food & Drug Administration post-inspection classification)
OAL	ODF Access Layer
OAQPS	Office of Air Quality Planning and Standards
OAR	Office of Oceanic and Atmospheric Research
OASH	Office of the Assistant Secretary for Health
OBDH	On-Board Data Handler
OBS	On-Board Software
OBSM	On-Board Software Maintenance
OBSW	On-Board Software
OCCM	Ocean Carbon Cycle Model
OClO	chlorine dioxide
OCONUS	Outside Continental United States
OCS	Outer Continental Shelf (oil)
OCTS	Japanese Ocean Color Temperature Scanner
ODBMS	Object-Oriented Data-Base Management System
ODE	Office of Device Evaluation
ODF	Observation Data File
ODP	Ozone Depletion Potential
ODS	Observation Datafile Subsystem
ODS	Operational Data Server
OEC	Olfactory Ensheathing Cell

OECA	Office of Enforcement and Compliance Assurance
OECD	Organization for Economic Cooperation and Development
OFS	Orbiter Flight Simulator
OGIP	Office of Guest Investigator Programs
OGIST	Oregon Graduate Institute of Science and Technology
OH	Hydroxyl Radical
OHTA	Office of Health Technology Assessment
OIG	Office of Inspector General
OIU	Observer Interface Unit
OLA	Off-Line Analysis
OLS	Optical Line Scanner
OM	Optical Monitor
OM1	OM Telescope Unit
OM2	OM Digital Electronics Unit
OMB	Office of Management and Budget (U.S.)
OMC	Optical Monitoring Camera
ONR	Office of Naval Research (U.S.)
OOA	Object-Oriented Analysis
OOD	Object-Oriented Design
OODBMS	Object-Oriented Data-Base Management System
OP	Office of the President
OPD	Outpatient Department
OPEP	Organisation des Pays Exportateurs de Pétrole
OPIA	Optical Precision Instrument Associates
Ops	Operations
OPS	Optical Sensor
Opsnet	Operational Network
ORA	FDA's Office of Regulatory Affairs
ORATOS	Orbit and Attitude Operating System
ORAU	Oak Ridge Associated Universities
ORISE	Oak Ridge Institute for Science and Education
ORNL	Oak Ridge National Laboratory's
ORR	Oak Ridge Reservation
ORS	Outer root sheath
ORU	Organized Research Unit
OSC	Offline Satellite Calibration
OSCAR	Online Services for Curriculum and Articulation Review
OSF1	Open Systems Foundation brand of Unix
OSHA	Occupational Safety and Health Act (1970)
OSIM	OM Simulator
OSO	Orbiting Solar Observatory
OSS	Office of Space Sciences
OSSA	Office of Space Sciences and Applications
OST	Office of Science and Technology
OSU	Oregon State University
OSW	OM Science Window
OTAC	Observing Time Allocation Committee
OTEC	ocean thermal energy conversion (electricity)
OTF	On-Target Flag
P&T	Privilege & Tenure Committee

P-N	Positive-Negative
P/A	PreAmplifier
PA	Preliminary Assessment
PAB	Pharmaceutical Affairs Bureau (Japan)
PAGES	Past Global Changes (IGBP)
PARE	Physiological & Anatomical Rodent Experiment
PBL	Planetary Boundary Layer
PBPK	Physiologically-Based Pharmacokinetic
PBX	Public Branch Exchange
PC	Personal computer (host)
PCA	Principal Component Analysis
PCB	Polychlorinated Biphenyls
PCF	Pounds per cubic foot
PCMDI	Program for Climate Model Diagnosis and Intercomparison
PCMS	PPS Control & Monitoring System
PCS	Payload Calibration Subsystem
PD	Photo Diode
PDA	Parenteral Drug Association
PDF	Portable Document Format (created by Adobe Acrobat)
PDIC	Professional Diving Instructors Corporation International; Diving Instruction Organization.
PDP	Postinsertion Deorbit Preparation
PDR	Physician’s Desk Reference
PDTS	PPS Data Transfer System
PDUFA	Prescription Drug User Fee Act (1992, U.S.)
PEM	Particle Environment Monitor
PERI	Pharmaceutical Education & Research Institute
Perl	Interactive programming language available for Unix
PGO	Principal Guest Observer
PGs	Proposal Generation System
PHA	Pulse Height Amplitude
PHA	Pulse Height Analyzer
PhRMA	Pharmaceutical Research and Manufacturers of America (formerly PMA, Pharmaceutical Manufacturers Association)
PHS	Public Health Service (U.S.)
PHS	Proposal Handling Subsystem
PI	Position Invariant
PI	Principle Investigator
PIDAS	Portable Instantaneous Display and Analysis Spectrometer
PIEAS	Pakistan Institute of Engineering & Appliead Sciences
PIER	Public Interest Energy Research Program
PLSL	Propellants and Life Support Laboratory
PM	Particulate Matter
PM	Protocol Machine
PMA	Premarket Application
PMC	Pressure-Modulator Cell
PMEL	Pacific Marine Environmental Laboratory (NOAA and ERL)
PMIR	Pressure Modulator Infrared Radiometer
PMR	Pressure Modulator Radiometer
PMS	Payload Monitoring Subsystem
PMU	Payload Monitoring Unit
pn	p-type/n-type semiconductor

PNG	Portable Network Graphics (graphic file standard/extension)
PNNL	Pacific Northwest National Laboratory (DOE) (US)
POC	Panel of Counselors
POCE	Pantone Open Color Environment
POE	Point of Entry
POEM	Polar-Orbiting Earth Mission
POEM	Polar-Orbiting Earth Mission (ESA)
POEMS	Positron Electron Magnetic Spectrometer
POES	Polar-Orbiting Environmental Satellite
POGO	Polar Orbiting Geophysical Observatory
POGO	Polar-Orbiting Geophysical Observatory
POL	Physician's Office Laboratory
POLDER	Polarization and Directionality of Reflectances
POLES	Polar Exchange at the Sea Surface
POS	Preferred Observation Schedule
POS	Point of Service Plan
POSIX	Portbale Operating System Interface
POSS II	Palomar Observatory Sky Survey, second version
POWER	Program on Workable Energy Regulation
ppb	parts per billion (109)
PPG	Preliminary Planning Guide
ppm	parts per million
PPM	Position and Proper Motion
PPMV	Parts Per Million by Volume
PPO	Preferred provider organization
PPQA	Pre-Product Quality Assurance
PPR	problems with the Photopolarimeter Radiometer
PPRC	Physician Payment Review Commission
PPS	XMM Pipeline Processing Subsystem
ppt	parts per trillion (1012)
PR	Precipitation Radar
PRARE	Precise Range and Rate Equipment
PRAREE	Precise Range and Rate Equipment-Extended Version
PREST	Policy Research in Engineering, Science & Technology
PRF	Point Response Subsystem
PRF	Pulse Repetition Frequency
PRIC	Polar Research Institute of China
PRO	Professional Review Organization
PROM	Programmable Read Only Memory (chip)
PROPAC	Prospective Payment Assessment Commission
PROS	X-Ray data analysis package, part of IRAFm supported by CfA
PS	Project Scientist
PS	PostScript
PS/2	Personal System/2 (Microsoft)
PSC	Polar Stratospheric Clouds (in Antarctic)
PSCL	Propellant Systems Cleaning Laboratory
PSD	Prevention of Significant Deterioration
PSD	Power Spectral Density
PSDF	Power Spectral Density Function
PSF	Point-Spread Function

PSF	Planning Skeleton File
PSPC	Position Sensitive Proportional Counters
PSS	Procedures, Specifications and Standards
PSSM	Polish Society for Sexual Medicine
PST	Project Science Team
PSU	power supply unit
PT	Physical Therapy
PT	Pass-Through
PU	Propellant Utilization
PV	Potential Vorticity
PVC	Polyvinyl Chloride
PWSA	Ports and Waterways Safety Act
PX	XMM Project
PXP	XMM Project Payload
PXS	XMM Project Spacecraft
Qa	Center for Quality Assurance in International Education
QAO	Quality Assurance Office
QBO	Quasi-biennial Oscillation (atm.)
QC	Quality Control
QE	Quantum Efficiency
QLA	Quicklook Analysis
QM	Qualification Model
QRSL	quick-reaction space laboratory
QSIT	Quality System Inspection Technique
QSO	Quasar\|Quasi-Stellar Object
QSR	Quality System Regulation
R&D	Research & Development
RA	Research Assistant
RA	Radar Altimeter (R/A Preferred)
RA	Regulatory Affairs
RA	Right Ascension
Radar	RAdio Detection And Ranging
RADARSAT	Radar Satellite
RAE	RGS Analogue Electronics
RAF	Radiation Amplification Factor
RAID	Redundant of Inexpensive Discs
RAL	Rutherford Appleton Laboratory, UK
RALPH	Reduction and Acquisition of Lunar Pulse Heights
RAM	random-access memory
RANN	Research Applied to National Needs (NSF)
RAPS	radiologists, anesthesiologists, and pathologists
RAPS	Regulatory Affairs Professional Society
RASS	radio-acoustic sounding system
RCRA	Resource Conservation and Recovery Act (1976, 1984)
RCS	Revision Control System
RD	Reference Document
RDBMS	Relational Database Management System
RDE	RGS Digital Electronic Unit
RDF	Combustion of Refuse Derived Fuels
RDP	Recreational Dive Planner

REACH	REmote Access to Circular History-files
REM	Rocket Engine Module
RF	Radio Frequency
RFC	RGS Focal Camera Unit
RGA	RGS Grating Assembly
RGIT	Robert Gordon's Institute of Technology
RGS	Reflection Grating Spectrometer
RGS	Reflection Grating Subsytem
RID	Review Item Discrepancy
RIS	reflector in space (laser beam adsorption, measures O3, CFCs, etc.)
RIXOS	ROSAT International X-Ray optical Survey
RM	Radiation Monitor
RMF	Response Matrix File
RMF	REDISTRIBUTION MATRIX FILE
RMS	Royal Meteorological Society
RMS	Root-Mean-Square
RNA	Ribose Nucleic Acid
RNLI	Royal National Lifeboat Institution
RNMI	Royal Netherlands Meteorological Institute
ROI	Return on Investment
ROM	Read-Only Memory
ROSAT	Roentgen Satellite
RPC	RGS Power Converter
RPE	Relative Pointing Error
RPM	Revolutions Per Minute, (Rotations Per Minute)
RPM	Resale Price Maintenance. The UK Net Book Agreement, as was. Means by which retail prices are controlled by primary suppliers. (Alternatively, Revolutions Per Minute, as in engine speed and 78, 33 and 45 records. In years to come how many people will know
RPOS	Re-planned Preferred Observation Schedule
RPS	Remote Proposal Submission
RRA	ROSAT Results Archive
RS	Remote Sensing
RSIM	RGS Simulator
RSNA	The Radiological Society of North America, Inc.
RSO	Resident Space Object
RSRM	Redesigned Solid Rocket Motor
rss	root-sum-square
RT	Real Time (R/T Preferred)
RTA	Real-Time Analysis
RTCS	Real-Time Computer System
RTF	Return To Flight
RTK	Right-To-Know
RTNEPH	real-time nephanalysis
RUC	Roskilde University Center
RVAU	Royal Veterinary and Agricultural University
RVU	Relative Value Unit
s&t	Directorate for Science and Technology
S-GCOS	Space-Based Global Change Observation System
S/C	Spacecraft
S/W	Software
SA	Astrophysics Division
SAA	Solar Aspect Angle

SAA	South Atlantic Anomaly
SAFARI	Southern African Fire-Atmosphere Research Initiative (BIBEX)
SAFIRE	Spectroscopy of the Atmosphere Using Far-Infrared Emission
SAFISY	Space Agency Forum on the International Space Year (1992)
SAG	Science Advisory Group
SAGE	Stratospheric Aerosol Gas Experiment
SAM	Stratospheric Aerosol Measurement
SAMS	stratospheric and mesopheric sounder
SAO	Semi-Annual Oscillation
SAO	Smithsonian Astrophysical Observatory
SAR	synthetic aperture radar (satellite)
SARA	Superfund Amendment And Reauthorization Act
SARS	Severe Acute Respiratory Syndrome
SARSAT	Search and Rescue Satellite
SAS	Science Analysis Subsystem
SASI	Statistical Analysis Systems Institute (Raleigh, North Carolina)
SASS	Standard Analysis Software System
SAST	Science Analysis Software Team
SAT	Sulphuric Acid Tetrahydrate
SAW	Surface Acoustic Wave
SBSTA	Subsidiary Body for Scientific and Technological Advice
SBUV	Solar Backscatter Ultraviolet (experiment)
SCANSCAT	scanning scatterometer
SCARABE	Scanning Radiation Budget Experiment
SCATT	SCATTerometer
SCB	Software Control Board
SCC	Spacecraft Coordinates
SCED	Engineering Department at ESOC
SCF	Standard Cubic Foot
SCHISM	Science Simulator
SCIAMACHY	SCanning Imaging Absorption SpectroMeter For Atmospheric CHartographY
SCIGETC	Science Intersegmental General Education Transfer Curriculum
SciSim	Science Simulator
SCOPE	Scientific Committee on Problems of the Environment (ICSU and IGBP)
SCOR	Scientific Committee for Oceanographic Research Seasat Sea Satellite
SCOS	Spacecraft Control and Operations System
SCPI	Standard Commands for Programmable Instruments
SCR	Software Change Request
SCRIPPS	Scripps Institution of Oceanography (University of California at San
SCSI	Small Computer Systems Interface, a common disc interface
SD	Screening Device
SDC	Swiss Development Corporation
SDE	Software Development Environment
SDF	Slew Data File
SDM	SOC Development Manager
SDOH	SOC Data Operations Handbook
SDSD	Satellite Data Services Division
SDSS	Sloan Digital Sky Survey
SEA	Slovak Energy Agency
SeaStar	Spacecraft flying SeaWIFS

SeaWIFS	sea-viewing wide-field sensor
SeaWiFS	Sea-viewing Wide Field-of-view Sensor
SEC	Science Executive Committee of the IWG
SEC	Sun-Earth Connection
SEM	Space Environment Monitor
SEOS	Synchronous Earth Observation Satellite
SERC	Science and Engineering Research Council
SERI	Solar Energy Research Institute
SESAME	Second European Stratospheric Arctic and Middle Latitude Experiment
SESL	Space Environment Simulation Laboratory
SEU	Structure and Evolution of the Universe
SEU	Single Event Upset
SFOM	SOC Facility Operations Manual
SGS	Sequence Generation Subsystem
SH	Southern Hemisphere
SHEIR	Society of Higher Education & Industrial Research
SHF	Short History File
SHM	Social History of Medicine
SI	Systeme International
SI	Solar Influences
SIB	Swiss Institute of Bioinformatics
SID	Structure Identifier
SIG	Special Interest Group
SIGMA	High Energy X-ray Instrument
SIM	Simulation Section
SIMBAD	Set of Identifications, Measurements, and Bibliography for Astronomical Data
SIMD	Single Instruction, Multiple Data (system) (processor)
SIO	Scripps Institutetution of Oceanography
SIO	Shirshov Institute of Oceanology
SIP	Scientific Operations Centre Implementation Plan
SIP	Sickness Index Profile
SIP	Short Implementation Plan
SIR	Spaceborne Imaging Radar
SIR	Shuttle Imaging Radar
SIR-C	Shuttle Imaging Radar-C
SIRD	SOC Implementation Requirements Document
SISEX	Shuttle Imaging Spectrometer Experiment
SLASIAC	Systemwide Library and Scholarly Information Advisory Committee
SLATEC	Sanida Los Alamos Technical Exchange Committee
SLIES	Stratospheric Limb Infrared Emission Spectrometer
SMD	Science Mission Division
SMDA	Safe Medical Devices Act (1990)
SME	Solar Mesosphere Explorer
SMHI	Swedish Meteorological and Hydrological Institute
SMM	Stratosphere Mesosphere Model
SMMR	Scanning Multichannel Microwave Radiometer
SMPTRB	Shuttle Main Propulsion Test Requirement Board
SMS/GOES	Synchronous Meteorological Satellite/Geostationary Operational Environmental Satellite
SMT	Software Maintenance Team
SNPA	Subnetwork Point of Attachment

SNR	Super Nova Remnant
SNR	Signal-to-Noise Ratio
SNRI	Sierra Nevada Research Institute
SO2	Sulfur Dioxide
so4	Sulfate radical
SOAPEX	Southern Ocean Atmospheric Photochemistry EXperiment
SOC	Space Operations Center
SOC	Science Operations Centre for XMM
SODAR	Sound Detection And Ranging (meteorological Instrument)
SOE	Security of Employment
SOLSTICE	Solar Stellar Irradiance Comparison Experiment
SOM	Spacecraft Operations Manager
sonar	(DOD) A sonic device used primarily for the detection and location of underwater objects.(This term is derived from the words "sound navigation and ranging.")
SOPH	SOC Operation Procedures Handbook
SOR	Standing Orders of the Regents
SORG	Stratospheric Ozone Review Group
SORI	Subcommittee on Research Initiatives
SOVT	System Operations Validation Tests
SPAC	State Pharmaceutical Administration of China
SPACON	Spacecraft Controller
SPADE	Stratospheric Photochemistry, Aerosols and Dynamics Expedition
SPAN	Space Physics Analysis Network
SPARC	Stratospheric Processes and their Role In Climate Change
SPART	Space Research and Technology
SPAS	Shuttle Pallet Satellite(German)
SPE	Solar Proton Event
SPEVAL	Spacecraft Evaluation System
SPI	Spectrometer for INTEGRAL
SPIE	The Society of Photo-optical Instrumentation Engineers
SPMP	Software Project Management Plan
SPO	Sponsored Projects Office
SPOT	Systeme Pour L'Observation De La Terre (France)
SPOT	Satellite Pour l'Observation de la Terre (France)
SPP	Solar Physics Payload
SPR	Software Problem Report
SPSO	Science Processing Support Office
SQA	Software Quality Assurance
SQHUW	Small Quantity Handlers of Universal Waste
SRAM	Sequential Random Access Memory
SRB	Surface Radiation Budget
SRD	Software Requirements Document
SRSS	Shuttle Range Safety System
SS	Survey Scientist for XMM
SSALT	Solid-State radar Altimeter
SSBUV	shuttle solar backscatter ultraviolet (radiometer)
SSC	Survey Science Centre for XMM
SSC-DB	Survey Science Centre Database
SSD	Software Specification Document
SSD	Space Science Department
ssdf	Space Science Development Facility

SSI	Space Studies Institute
SSI	Serial Synchronous Interface
SSID	Survey Science Interface Document
SSM/I	Special Sensor Microwave/Imager
ssms	Society for Sexual Medicine of Slovenia
SSO	Solar System Object
SSRD	Specific Science Requirements Document
SSS	Social Studies of Science
sssm	Scandinavian Society for Sexual Medicine
SST	Sea surface temperature
SSV	Space Shuttle Vehicle
ST-ECF	Space Telescope - European Coordinating Facility
STA	Science and Technology Agency (Japan)
STAR	Satellite for Telecommunication Applications and Research
StC	Steering Committee
STC	Science and Technology Center
STD	Salinity/Temperature/Depth
STE	Stratosphere-Troposphere Exchange
STEP	Stratosphere Troposphere Exchange Project
STERAO	Stratosphere-Troposphere Experiments: Radiation, Aerosols, and Ozone
StG	Steering Group
STI	Steel Tank Institute
STP	standard temperature and pressure (0° and 1 atm)
STP	Solar-Terrestrial Physics
STR	Star TRacker
STRATOZ	Stratospheric Ozone Expedition
STREAM	Stratosphere-Troposphere Experiment by Aircraft Measurements
STScI	Space Telescope Institute
STSCI	Space Telescope Science Institute
SUM	Software User's Manual
SUNY	State Universityrsity of New York
SUPARCO	Space of Upper Atmosphere Research Committee
SUSIM	Solar Ultraviolet Spectral Irradiance Monitor
SUTI	Sensitive but Unclassified Technical Information
SUV	Sport Utility Vehicle
SVF	Software Validation Facility
SVT	System Validation Test
SWHG	Social Welfare History Group
SWIR	Short-Wavelength Infrared
SWIRLS	Stratospheric Wind Infrared Limb Sounder
SWT	Science Working Team
SZA	Solar Zenith Angle
TA	Teaching Assistant
TAE	Transportable Applications Executive (a computer user interface)
TAG	Technical Advisory Group for Biological Control Agents of Weeds
TAO	Tropical Atmosphere Ocean
TB	Terabyte
TB	Tuberculosis
TBC	To Be Confirmed
TBW	To Be Written

TC	Telecommand
TcI/Tk	Tool Control Language and Toolkit
TCP/IP	Networking Protocol used on Internet
TDF	Transaction Data File
TDG	Tennessee Division of Geology
TDRSS	Tracking and Data Relay Satellite System
TdT	Total Dive Time
TED	Total Energy Detector
TERI	Tata Energy Research Institute
TERSE	Tunable Etalon Remote Sounder of Earth
TES	Tropospheric Emission Spectrometer (EOS)
TFT	Thin Film Transistor
TGEI	Tennessee Government Executive Institute
TGMI	Tennessee Government Management Institute
TGT	TDRSS Ground Terminal
THR	Thrust
TIMEX	Time Multiplexer
TIPS	Treasury Inflation-Protected Securities
TIR	Thermal Infrared
TIROS	Television InfraRed Observation Satellite (POES)
TIROS	Television and Infrared Observation Satellite
TIRS	Thermal Infrared Scanner
TM	Thematic Mapper (Landsat)
TM	Telemetry
TMAPI	Topic Map Application Programming Interface
TMC	Thinking Machine Corporation
TMI	TRMM Microwave Imager
TMPSU	Telescope Module Power Supply Unit
TMR	TOPEX Microwave Radiometer (EOS)
TMU	Transmission Message Unit
tnt	Tri-nitro-toulene
TNT	Trinitrotoluene
TOASTE	Transport of Ozone and Stratosphere Troposphere Exchange
TOBI	Towed Ocean Bottom Instrument
TOD	Theoretical Ocean Depth
TOGA	Tropical Ocean and Global Atmosphere Program
TOGA	Tropical Ocean Global Atmosphere
Toga/coare	Toga/Coupled Ocean-Atmosphere Response Experiment
TOMS	Total Ozone Mapping Spectrometer (satellite Instrument)
TOMS	Transactions On Mathematical Software
TOMUIS	3-D ozone mapping with ultraviolet imaging spectrometer
TOO	Target Of Opportunity
TOPEX	Ocean Topography Experiment
TOVS	TIROS Operational Vertical Sounder
TRACT	Transport of Pollutants over Complex Terrain (EUROTRAC)
TRC	The Research Corporation
TRI	Toxics Release Inventory
TRMM	Tropical Rainfall Measuring Mission (US-Japan)
TROPOZ	Tropospheric Ozone Expedition
TSE	Transmissible Spongiform Encephalopathies

TSTRP	Toxic Substance Research and Training Program
TSU	Tennessee State University
TTA	Time to Apogee
TTP	Time to Perigee
TUV	Technische Uberwachungs-Vereine
TWIP	Terminal Weather Information for Pilots
TWP	Tropical Western Pacific
UACB	Undergraduate Admissions Coordination Board
uade	Unanticipated Adverse Device Effects
UAF	University of Alaska Fairbanks
UARC	University Affiliated Research Center
UARS	Upper Atmosphere Research Satellite (NASA)
uart	Universal Asynchronous Receive and Transmit
UBA	Umweltbundesamt
UBA	Universal Breathing Apparatus
UC	University of California
UCAAD	University Committee on Affirmative Action and Diversity
UCACCORD	UC All Campus Collaboration on Outreach and Dissemination
UCAF	University Committee on Academic Freedom
UCAP	University Committee on Academic Personnel
UCAR	University Corporation for Atmospheric Research
UCB	University of California, Berkeley
UCCP	UC College Preparatory Initiative
UCD	University of California, Davis
UCEAP	University Committee on Education Abroad Program
UCEI	UC Energy Institute
UCEP	University Committee on Educational Policy
UCFW	University Committee on Faculty Welfare
UCI	University of California, Irvine
UCLA	University of California, Los Angeles
UCM	University of California, Merced
UCM-TF	University of California, Merced Task Force
UCMC	University of California Marine Council
UCMEXUS	UC Institute for Mexico and the United States
UCO	UC Observatories
UCOC	University Committee on Committees
UCOLASC	University Committee on Library and Scholarly Communication
UCOP	University of California, Office of the President
UCOPE	University Committee on Preparatory Education
UCORP	University Committee on Research Policy
UCP&T	University Committee on Privilege and Tenure
UCPB	University Committee on Planning and Budget
ucr	University of California, Riverside's
UCR	University Of Costa Rica
UCR	University of California at Riverside
UCR&J	University Committee on Rules and Jurisdiction
UCRP	University of California Retirement Plan
UCRS	University of California Retirement System
UCSB	University Of California Santa Barbara
UCSC	University of California, Santa Cruz (since 1965; Santa Cruz, California)

UCSD	University of California, San Diego (La Jolla, California)
UCSF	University of California, San Francisco
UCT	Universal Time Code
UEA	University of East Anglia
UER	University-Emeriti Relations Committee
UEXT	University Extension
ugamp	Universities Global Atmospheric Modelling Programme
UH	University of Heidelberg
UHF	Ultra High Frequency (300-3000 MHz; 1m-10cm)
UHV	Ultra-high Vacuum
Uk	United Kingdom of Great Britain and Northern Ireland
UKMO	United Kingdom Meteorological Office
UM	Unified Model
UNCCD	United Nations Convention to Combat Desertification
UNCED	United Nations Conference on Environment and Development
UNCLOS	United Nations Convention on the Law of the Sea (policy treaty)
UNECE	United Nations Economic Commission for Europe
UNEP	United Nations Environment Program
UNESCO	United Nations Educational, Scientific and Cultural Organization
unex	University Extension
UNFCCC	United Nations Framework Convention on Climate Change
Uniprot	Universal Protein Resource
Unis	University Centre in Svalbard
UNITAR	United Nations Institute for Training and Research
UOEAP	Universitywide Office of the Education Abroad Program
UOSAT	University Of Surrey Satellite
UPC	Universitat Politècnica de Catalunya
URD	User Requirements Document
URGENT	Urban ReGeneration and the ENvironmenT
URSI	Union Radio-Scientifique Internationale
US	United States of America
Usaec	United States Army Corps of Engineers
USBR	United States Bureau of Reclamation (USDI)
usce	United States Corps of Engineers
USCOE	United States Corps of Engineers
USDA	United States Department of Agriculture
USFS	United States Forest Service
USGCRP	United States Global Change Research Program
USGS	United States Geological Survey (DOI)
USLE	Universal Soil Loss Equation (erosion Model)
USP	United States Pharmacopeia
USPHS	United States Public Health Service
UT	University of Tennessee
UT	Universal Time
Ut-battelle	University of Tennessee-Battelle
Ut-k	University of Tennessee, Knoxville
UTC	Coordinated Universal Time
utc	Universal Time Coordinate
UTLS	Upper Troposphere/Lower Stratosphere
UV	Ultraviolet (Light)

UVPI	Ultraviolet Plume Instrument
UW	University of Washington
UWERN	University WEather Research Network
V&V	Validation & Verification
VAI	Voluntary Action Indicated (Food & Drug Administration postaudit inspection classification)
VAN	Value-Added Network
VCP	Voluntary Cooperation Program (Equipment and Services) (UN)
VDC	Voltage Direct Current
VHF	Very High Frequency
VILSPA	Villafranca Station at Villafranca del Castillo, Spain
VIRS	Visible Infrared Scanner
VIRSR	Visible Infrared Scanning Radiometer
VIRTEM	Validation of IASI Radiative Transfer: Experiments and Modelling
Vis	Visible
VISSR	Visible/Infrared Spin-Scan Radiometer (GOES)
VLA	Very Large Array
VLF	Very Low Frequency
VNIR	Visible And Near InfraRed
VOB	Vertical Optical Branch
VOC	Volatile Organic Compounds (air pollution)
VOS	Voluntary Observing Ship
VT	Visual Testing
W	Watt
WAN	Wide Area Network
WASC	Western Association of Schools and Colleges
WBDCS	Wide-Band Data Collection System
WCPS	Women's Caucus for Political Science
WCRP	World Climate Research Program
WCSAR	Wisconsin Center for Space Automation and Robotics
WCSJ	World Conference of Science Journalists
WCSP	World Congress of Science Producers
wdc	World Data Centre
WEC	World Energy Council
WEFAX	Weather Facsimile
WETNET	Network for Distribution and Joint Analysis of SSM/I Data (MSFC)
WFC	World Food Council
WFC	Wide-Field Camera
WFOV	Wide Field Of View
WG	Working Group
WHO	World Health Organization
WHOI	Woods Hole Oceanographic Institution
WHT	William Herschel Telescope
WIMP	Window, Icon, Menu and Pop-up
WINDII	Wind Imaging Interferometer
WIPP	Waste Isolation Pilot Plant (for Nuclear Wastes)
WLAN	Wireless Local Area Network
WMF	Windows Metafile
WMO	World Meteorological Organization (ICSU)
WMREI	Waste Management Research and Education Institute
WMRS	White Mountain Research Station

WOCE	World Ocean Circulation Experiment
WPD	War Plans Division
WRT	"With respect to", especially in fields such as Mathematics.
WSAD	Websphere Studio Application Developer
WWSEF	Waterloo-Wellington Science and Engineering Fair
WWW	World Wide Web
WWW	World Weather Watch
X-SAR	X-Band Synthetic Aperture Radar
XFDS	XMM Flight Dynamics System
XFTS	XMM File Transfer System
XID	X-Ray Identification
XIDT	X-Ray Identification Team
Xie	X-Ray Imaging Experiment
XIMAGE	Image Display Package, part of XANADU
XMCS	XMM MissionControl System
XMM	X-ray Multi Mirror Mission
XPM	Cross-Phase Modulation
XRD	X-Ray Diffraction
XRONOS	Time-Series analysis package, part of XANADU
XSCS	XMM MOC Control System
XSELECT	Data selection and binning tool, part of FTOOLS package
XSPEC	X-Ray spectral analysis package, part of XANADU
XTE	X-Ray Timing Explorer