| Acronym | Meaning |
| QUANGO | (British Commonwealth) QUasi Autonomous Non-Governmental Organisation |
| PDD | Past Due Date - Presidential Decision Directive |
| EGRET | Energetic Gamma-Ray Experiment Telescope |
| TIR | Tigrinya Language (ISO 639-2 Code) |
| DVM | Decessit Vita Matris (Latin |
| FO | Faroe Islands (ISO 3166 Digram; FIPS 10-4 Territory Code) -Force Operations (military) - Forward Observer - Frame Optional (military Symbology) |
| TSCA | Toxic Substances Control Act (tosca) |
| LCC | Land Component Commander |
| LSI | Large-Scale Integration |
| USA | United States Of America (alsoISO 3166 Trigram) - United States Army |