| Acronym | Meaning |
| IVI | Interchangeable Virtual Instrument |
| FFT | Fast Fourier Transform - Final Fantasy Tactics |
| MNB | Multinational Brigade |
| YTS | Youth Training Scheme |
| WAC | Women's Auxiliary Corps (WWII Canada) |
| PLL | Phase-Locked Loop (electronics) |
| CTI | Co-operative Target Identification |
| BBL | Be Back Later - Bird Banding Laboratory - British Basketball League |
| APCR | Armour-Piercing |
| YV | Yoctovolt |