English abbreviations from etmc to etseq
- ETMC (Enhanced Traffic Management Coordinator)
- ETN (Eastland Municipal Airport)
- ETO (Essentials Tools And Objects)
- ETOH (Ethyl Alcohol (Ethanol))
- ETOP (Extended-range twin-engine operation)
- ETOPS (Extended-range Twin-engine Operational Performance Standards (aviation))
- ETP (equal time point)
- ETPC (Electrolytic Tough-Pitch Copper)
- ETPL (Endorsed TEMPEST Products List)
- ETQR (External Total Quality and Reliability)
- ETR (Santa Rosa Airport)
- ETRAC (Enhanced Tactical Radar Correlator)
- ETRM (Enterprise Technology Reference Model)
- ETS (Elevated TOW System)
- ETSA (European Television Services Association)
- et seq. (et sequens/sequentes/sequentia (Latin, "and the following one"))