| Acronym | Meaning |
| IRST | Infra-red Search And Track |
| KC | Kilocoulomb |
| CIBC | Canadian Imperial Bank Of Commerce (obsolete) |
| APFSDS | Armour-Piercing |
| NAC | National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command |
| VN | Vietnam (ISO 3166 Digram) |
| DISE | Deployable Intelligence Support Element |
| FI | Finland (ISO 3166 Digram; FIPS 10-4 Country Code) |
| MSE | Multiple Subscriber Element |
| CU | Old Church Slavonic Language (ISO 639-1 Code) |