| Acronym | Meaning |
| TRAIN | Tourist Railway Association |
| EMCON | (Electromagnetic) Emissions Control |
| II | Sichuan Yi Language (ISO 639-1 Code) |
| EOM | End Of Message |
| SWAPO | South-West Africa People's Organisation |
| TS | Terasecond |
| A/C | Air Conditioned/Conditioning - Aircraft |
| MIRV | Multiple Independent Reentry Vehicle |
| AFAIC | As Far As I'm Concerned |
| DWIM | Do What I Mean |