| Acronym | Meaning |
| EST | Estonian Language (ISO 639-2 Code) |
| PLN | Platoon |
| OAC | On Approved Credit |
| TJ | Tajikistan (ISO 3166 Digram) - Terajoule |
| DVLC | UK Driver And Vehicle Licencing Centre |
| CA | California (postal Symbol) - Canada (FIPS 10-4 Country Code; ISO 3166 Digram) - Catalonia -Civil Affairs - Close Armour - Computer Associates - Counter-Air |
| VSAT | Very Small Aperture Terminal (vee-satt) |
| DFAD | Digital Feature Analysis Data (dee-fad) |
| CIS | Canadian Interuniversity Sport - Commonwealth Of Independent States - Command And Information System - Communication And Information System |
| GAAR | General Anti-Avoidance Rule (tax Evasion) |