| Acronym | Meaning |
 | MTS | Maintenance Training System - Michigan Terminal/Timesharing System - Movement Tracking System - Multichannel Television Sound - Multi-Technical Services |
| TTO | Trinidad And Tobago (ISO 3166 Trigram) |
| RPG | (US-CA) Regional Planning Group - Report Program Generator - Rocket Projectile Gun - Rocket-Propelled Grenade - Role-Playing Game |
| TMJ | TemporoMandibular Joint (syndrome) |
| SR | Strontium |
| AJ | Attojoule |
| UST | Underground Storage Tank |
| RMP | Recognised [Operating/Operational] Maritime Picture |
| VSAT | Very Small Aperture Terminal (vee-satt) |
| RWF | Rwandan Franc (ISO 4217 Currency Code) |
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