| Acronym | Meaning |
 | OPSI | Overwhelming Post Splenectomy Infection - UK Office Of Public Sector Information |
| ATCCIS | Army Tactical Command And Control Information System |
| UNCTAD | United Nations Conference On Trade And Development |
| CMR | Cameroon (ISO 3166 Trigram) -Coaxial Main Rotors (helicopter Type) |
| NASA | National Aeronautics And Space Administration |
| GBE | Knight/Dame Grand Cross Of The Order Of The British Empire |
| INST | Information Standards And Technology |
| USAFSPC | U.S. Air Force Space Command |
| FR | Francium |
| DTD | Digital Terrain Data |
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