| Abbreviation | Definition |
|---|---|
| ETMH | Electronic Technologies for Medical & Healthcare |
| ETMS | Electronic Territory Management System |
| ETMS | Electronics Technician Maintenance School |
| ETNA | Electronic Transactions on Numerical Analysis |
| ETO | electronic Training Objects |
| ETOC | Electric Tournament of Champions |
| ETOD | Electronic Terrain and Obstacle Data |
| ETOD | Electronic Terrain Obstacle Data |
| ETOM | Electronic Telecom Operations Map |
| ETOR | Electronic Test Order And Result |
| ETOR | Electronic Test Ordering and Results |
| ETP | Electric Transition Plan |
| ETP | Electronic Transfer of Prescriptions |
| ETPA | Electronic Trading Partner Agreement |
| ETPC | Electrolytic Tough-Pitch Copper |
| ETQR | External Total Quality and Reliability |
| ETR | Electronic Tandem Resources |
| ETR | Electronic Temporary Registration |
| ETR | electronic timer and remote |
| ETR | Electronic Title and Registration |