| Acronym | Meaning |
| TCAS | Traffic Collision Avoidance System |
| AASPEM | Advanced Air-to-air System Performance Evaluation Model |
| RPN | Reverse Polish Notation |
| C2V OR C?V | Command And Control Vehicle |
| RCHA | Royal Canadian Horse Artillery (regiment) |
| TNA | Total Nonstop Action Wrestling |
| GV | Manx Language (ISO 639-1 Code) |
| SUD | Subject Under Discussion |
| MK | Millikelvin |
| ILC | International Law Commission - International Linear Collider |