| Acronym | Meaning |
 | REEF | Reef Environmental Education Foundation |
| NAACP | National Association For The Advancement Of Colored People (N Double-A CP) |
| DY | Dysprosium |
| MODSAF | Modular Semi-Automated Forces (military Simulation) |
| CFV | Cavalry Fighting Vehicle |
| BO | Tibetan Language (ISO 639-1 Code) |
| AAAS | American Association For The Advancement Of Science |
| HKG | Hong Kong (ISO 3166 Trigram) |
| COG | Centre Of Gravity - Current Operations Group (military) -Republic Of The Congo (ISO 3166 Trigram) |
| MBTA | Massachusetts Bay Transportation Authority - Migratory Bird Treaty Act (U.S.) |
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