| Acronym | Meaning |
 | GYD | Guyana Dollar (ISO 4217 Currency Code) |
| PPCLI | Princess Patricia's Canadian Light Infantry (regiment) |
| MO | Macao (ISO 3166 Digram) -Medical Officer -Missouri (postal Symbol) -modus Operandi (Latin |
| DTI | UK Department Of Trade And Industry |
| HDRA | Henry Doubleday Research Association |
| CA | California (postal Symbol) - Canada (FIPS 10-4 Country Code; ISO 3166 Digram) - Catalonia -Civil Affairs - Close Armour - Computer Associates - Counter-Air |
| MLC | Member Of The Legislative Council (in India) |
| WASP | White Anglo-Saxon Protestant - Wide Angle Search For Planets - Women Airforce Service Pilots |
| LSND | Liquid Scintillator Neutrino Detector |
| ATSD | (U.S.) Assistant To The Secretary Of Defense |
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