| Acronym | Meaning |
 | UM | U.S. Minor Outlying Islands (postal Symbol; ISO 3166 Digram) |
| KCK | Kansas City |
| PCP | Phencyclidine - Pneumocystis Jiroveci Pneumonia (formerly Peumocystis Carinii) -Probabilistically Checkable Proof |
| IB | International Baccalaureate |
| OSI | Office Of Strategic Influence - Ontario Swine Improvement - Open Source Initiative - Open Systems Interconnection |
| ANT | Netherland Antilles (ISO 3166 Trigram) |
| TE | Telugu Language (ISO 639-1 Code) |
| LUB | Tshiluba Language (ISO 639-2 Code) |
| AMFOM | Advanced Missile Fly Out Model (am-fomm) |
| HPLC | High Performance Liquid Chromatography |
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