| Acronym | Definition |
|---|
| EATR➣Energetically Autonomous Tactical Robot (Defense Advanced Research Projects Agency) |
| EATR➣Exhaust Air Transfer Ratio (ventilation) |
| EATR➣Effective Average Tax Rate |
| EATR➣Edgewood Arsenal Technical Report |
| EATR➣Environment Assessment Technical Report of DEIA |
| EATR➣En-Route Air Traffic Regulation |