| Abbreviation | Definition |
|---|---|
| ETB | Electric Trolley Bus |
| ETB | Electronic Throttle Body |
| ETB | Electronic Transfer Belt |
| ETBA | Electrical Trade Bargaining Agency |
| ETBA | Electronic And Time Based Art |
| ETBC | Electronics Take Back Coalition |
| ETC | Electronic Theatre Controls |
| ETC | Electronic Transaction Clearing |
| ETC | Electronic Transaction Clearinghouse |
| ETC | Enhanced Throughput Cellular |
| ETCA | electronic Tax Credit Application |
| ETCC | Electronic Transaction Consultants Corporation |
| ETCS | Electronic Throttle Control System |
| ETCS | Electronic Traction Control System |
| ETD | Economic Transformer Design |
| ETD | electronic theses and dissertations |
| ETD | Electronic Theses Dissertations |
| ETD | electronic theses/ dissertations |
| ETD | Electronic Thesis Dissertation |
| ETD | Electronic Trade Documents |