| Acronym | Meaning |
 | TMT | Thirty Meter Telescope |
| TZC | Tetrazolium Chloride |
| SWG | Surface Warfare Group - Symbology Working Group |
| PPQN | Pulses Per Quarter Note (ditto) |
| BCE | Banque Centrale Europ?enne - Battlefield Co-ordination Element - Before Common Era - British Columbia Electric Railway |
| DBE | Dame Commander Of The Order Of The British Empire |
| MMEV | Multi-Mission Effects Vehicle |
| MMC | Machinist's Mate |
| ALTE | Association Of Language Testers In Europe |
| TRAIN | Tourist Railway Association |
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