| ECA | Electrical control activity |
|---|---|
| ECA | Enterobacterial common antigen |
| ECA | Eosinophil chemotactic activity |
| ECA | Epidemiologic Catchment Area |
| ECA | Epidemiological Catchment Area |
| ECA | Erythrina cristagali |
| ECA | Erythrina cristagalli agglutinin |
| ECA | Ethacrynic acid |
| ECA | External carotid artery |
| ECAM | endothelial cell adhesion molecule |