| Abbreviation | Definition |
|---|---|
| CEL | California Eastern Laboratories |
| CELIA | Cognitive Environments Laboratory Intelligent Assistant |
| Cels. | Celsius |
| CELSS | Columbia Experimental Laboratory in the Social Sciences |
| Cent. | centigrade |
| CEO | Chick Embryo Origin |
| CEO | Chief Executive Officer |
| CER | Center for Evaluation and Research |
| CERL | Central Electricity Research Laboratories |
| CERL | Cognitive Ergonomics Research Laboratory |
| CERL | Composite Engineering Research Laboratory |
| CERL | Computational Epidemiology Research Laboratory |
| CERL | Computer Engineering Research Laboratory |
| CERL | Construction Engineering Research Laboratory |
| CERL | Culture And Emotion Research Laboratory |
| CERL | Cyber Engineering Research Laboratory |
| CEU | Chemical Explosion Unit |
| CEU | Clinical Effectiveness Unit |
| CEV | Controlled Enviromental Vault |
| CF | Clotting Factor |