| Rank | Abbreviation | Meaning |
|---|
| ***** | LECA | Last Eukaryotic Common Ancestor
| |
| *** | LECA | leukocyte-endothelial cell adhesion
| |
| *** | LECA | Law Enforcement Communications Assistant
| |
| ** | LECA | Local Exchange Carrier Association
| |
| ** | LECA | Largest Effective Coefficient Algorithm
| |
| ** | LECA | Located in East Central Alabama
| |
| ** | LECA | Laboratoire d'Examen des Combustibles Actifs
| |
| * | LECA | Lightweight Expanded Clay Aggregate
| |
| * | LECA | Linex
| |
| * | LECA | Launch Escape Control Area
| |
| * | LECA | Leading Event Caterer Association
| |
| * | LECA | Land and Environment Court Act
| |
| * | LECA | Law Enforcement Compensation Act
| |
| * | LECA | Long Eaton Cricket Association
| |
| * | LECA | luminol enhanced chemiluminescence assay
| |
| * | LECA | Light Expanded Clay Aggregate
| |
| * | LECA | Lightweight expanded clay aggregrate
| |
| * | LECA | Law Enforcement Career Academy
| |
| * | LECA | Lithuanian Energy Consultants Association
| |
| * | LECA | Lehman Caves National Monument
| |
| * | LECA | Law Enforcement Cooperative Agreements
| |
| * | LECA | Left External Carotid Artery
| |
| * | LECA | Lepidium campestre
| |
| * | LECA | Lied Education Center for the Arts
| |
| * | LECA | Laboratoire et Cognition Animale
| |