| Acronym | Meaning |
| ALTE | Association Of Language Testers In Europe |
| TSA | Theatre Storage Area - Time Slot Allocation - Transportation Security Administration |
| TON | Tongan Language (ISO 639-2 Code) |
| BART | Bay Area Rapid Transit |
| RWADA | Resident Weighted Average Daily Attendance (New York State Term Used In Public Education To Indicate The Size Of A School District |
| TNO | Trans-Neptunian Object |
| FJ | Fijian Language (ISO 639-1 Code) |
| YK | Yottakelvin |
| MOUT | Military Operations In Urban[ized] Terrain |
| NCCAM | U.S. National Center For Complementary And Alternative Medicine |