| Acronym | Meaning |
 | SOUTHCOM | (U.S.) Southern Command |
| AYBABTU | All Your Base Are Belong To Us |
| IRST | Infra-red Search And Track |
| US | United States (alsoISO 3166 And FIPS 10-4 Country Code Digram) |
| IMS | Information Management System - International Meat Secretariat - Ion Mobility Spectrometer |
| CPT | Contingency Planning Team |
| TIR | Tigrinya Language (ISO 639-2 Code) |
| CBS | Columbia Broadcasting System - Corps Battle Simulation |
| IPA | India Pale Ale - International Phonetic Alphabet - Isopropyl Alcohol |
| MHWS | Mean High Water Springs (nautical Charts) |
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