| Acronym | Meaning |
 | USA | United States Of America (alsoISO 3166 Trigram) - United States Army |
| TOS | Tape Operating System - Terms Of Service - Tramiel Operating System |
| XHR | EXtra High Image Resolution - XMLHTTPRequest |
| CARE | Community Database On Accidents On The Roads In Europe -Cooperative For Aid And Relief Everywhere (originally Cooperative For American Remittances To Europe) |
| ET | Ethiopia (ISO 3166 Digram; FIPS 10-4 Country Code) - Exatesla -Extra Terrestrial |
| EKG | Electrocardiogram (from German Elektrokardiogramm) |
| PEST | UK Public Engagement With Science And Technology |
| IAI | International African Institute - Israel Aircraft Industries |
| TAC | U.S. Tactical Air Command (1946-1992) |
| TMA | Terminal Manoeuvring Area (restricted Flying Zone) |
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