| Acronym | Meaning |
| US | United States (alsoISO 3166 And FIPS 10-4 Country Code Digram) |
| IN TRANS. | In Transitu (Latin |
| HUD | Head-Up Display - Housing And Urban Development |
| MSE | Multiple Subscriber Element |
| HMM | Hidden Markov Model |
| QWGAOR | Quadripartite Working Group On Army Operational Research (qwig-a-o-r) |
| IW | Information Warfare |
| AR | Argon |
| LEU | Low-Enriched Uranium |
| SEAD | Suppression Of Enemy Air Defence |