| Acronym | Meaning |
| HIRISE | High Resolution Imaging Science Experiment |
| IFV | Infantry Fighting Vehicle |
| HANS | Head And Neck Support (device Used In Many Race Cars) |
| DFAS | (U.S.) Defense Finance And Accounting Service |
| LAW | Light Antitank Weapon |
| ESH | Western Sahara (ISO 3166 Trigram) |
| NIB | New In Box (Internet Auction/trading Listings) |
| ACT | R -ACT-Rational (cognitive Model) |
| COEA | Cost Operational Effectiveness Analysis (military) |
| ONI | (U.S.) Office Of Naval Intelligence |