| Rank | Abbreviation | Meaning |
|---|
| ***** | GECS | Graduated Elastic Compression Stocking
| |
| ***** | GECS | General Electric Capital Services, Inc.
| |
| **** | GECS | Global Enterprise Collaboration Services
| |
| *** | GECS | Global Education Consultancy Services
| |
| *** | GECS | Global Economic Crime Survey
| |
| *** | GECS | Geriatric Education Centers
| |
| *** | GECS | General Electric Capital Services
| |
| *** | GECS | Greenhouse Gas Emission Control Strategies
| |
| ** | GECS | Group on Experimental and Computational Sociology
| |
| ** | GECS | Global Environmental Change and Sustainability
| |
| ** | GECS | Global Educational Collaboration System
| |
| ** | GECS | Global Electronic Commerce Services
| |
| * | GECS | Global Event Control Server
| |
| * | GECS | Gemini Environmental Control System
| |
| * | GECS | Global Educational and Consulting Services
| |
| * | GECS | gingival epithelial cells
| |
| * | GECS | Glomerular epithelial cells
| |
| * | GECS | Greg Evans Computer Solutions, LLC
| |
| * | GECS | Gas Emission Control Strategies
| |
| * | GECS | Geodetic Engineering Cartography and Surveying
| |
| * | GECS | Gas Electricity Certificates
| |
| * | GECS | glomerular visceral epithelial cells
| |
| * | GECS | glomerular endothelial cells
| |
| * | GECS | German Education Consultancy Services
| |
| * | GECS | Greg Evans Computer Solutions
| |