| Acronym | Meaning |
 | BOT | Balance Of Trade - Build Operate Transfer - Bank Of Thailand |
| RRSP | Registered Retirement Savings Plan (Canada; Roughly Equivalent To The IRA In The U.S.) |
| SMS | Many |
| TSA | Theatre Storage Area - Time Slot Allocation - Transportation Security Administration |
| MUS | Mauritius (ISO 3166 Trigram) |
| PCP | Phencyclidine - Pneumocystis Jiroveci Pneumonia (formerly Peumocystis Carinii) -Probabilistically Checkable Proof |
| ARL | UK Admiralty Research Laboratory (1921?1977) - U.S. Army Research Laboratory - UIUC Aviation Research Laboratory |
| FWI | French West Indies |
| CHN | China (ISO 3166 Trigram) |
| KGB | Komitet Gosudarstvennoy Bezopasnosti (Russian Committee For State Security) (1954-1991) |
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