| Acronym | Meaning |
| XPF | CFP Franc (ISO 4217 Currency Code) |
| IUSS | Integrated Undersea Surveillance System - Integrated Unit Simulation System - International Union Of Soil Science |
| Y | Yotta - Yttrium |
| ACDA | Arms Control & Disarmament Agency |
| UCLES | University Of Cambridge Local Examinations Syndicate |
| WFD | Weaponof Focused Destruction |
| IKU | Inuktitut Language (ISO 639-2 Code) |
| LPC | Linear Predictive Coding |
| FH | Femtohenry |
| BIH | Bosnia And Herzegovina (ISO 3166 Trigram) |