| Acronym | Meaning |
 | CMR | Cameroon (ISO 3166 Trigram) -Coaxial Main Rotors (helicopter Type) |
| SIMAC | Semantic Interaction With Music Audio Contents |
| MW | Maintenance Of Way (also MOW) -Malawi (ISO 3166 Digram) -Medium Wave (radio) -Megawatt |
| NT | Iraq-Saudi Arabia Neutral Zone (ISO 3166 Digram; Obsolete 1993) - Northern Territory (Australia) (postal Symbol) - Northwest Territories (Canada) (postal Symbol) - National Trust (UK) |
| NSB | Norges Statsbaner (Norwegian State Railways) |
| CRAM | Combined Radiometric Correction Model |
| POCD | Post-Operative Cognitive Dysfunction |
| IST | Information System Technology - UCF Institute For Simulation And Training |
| BLEVE | Boiling Liquid Expanding Vapour Explosion (blevy) |
| INA | Interlingua Language (ISO 639-2 Code) |
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