| Abbreviation | Definition |
|---|---|
| ECG | ElectroCardioGram |
| ECL | ElectroChemiLuminescence |
| ECMO | extra-corporeal membrane oxygenation |
| ECP | Emergency Contraception Pill |
| eCRF | electronic case report form |
| e-CRF | electronic case report form |
| ECRI | Emergency Care Research Institute |
| ECRI | Emergency Care Research Institute (no longer uses name initials only) |
| ECRS | Emergency Coordination and Response Staff |
| ECRS(CFSAN) | Emergency Coordination and Response Staff (CFSAN) |
| ECS(OC) | Economics Staff (OC) |
| ECT | Electro-Convulsive Therapy |
| ECT(CFSAN) | Economics Team (CFSAN) |
| eCTD | electronic common technical document |
| ECU | European Currency Unit |
| ED | Effective Dose |
| EDIFACT | Electronic Data Interchange for Administration, Commerce, and Transportation |
| EDIPI | Electronic Data Interchange Personal Identifier |
| EDKB | Endocrine Disrupter Knowledge Base |
| EDMF | European Drug Master File |