| Acronym | Meaning |
 | ATN | Dronning Maud Land (ISO 3166 Trigram; Merged With AQ In 1983) |
| MEZ | Missile Engagement Zone |
| MARCENT | United States Marine Forces Central Command |
| IMPAC | International Merchant Purchase Authorization Card |
| CFLCC | Coalition Forces Land Component Command |
| DTSA | (U.S.) Defense Technology Security Administration |
| VGB | British Virgin Islands (ISO 3166 Trigram) |
| RAC | Royal Automobile Club (in The United Kingdom |
| TH | Thai Language (ISO 639-1 Code) |
| MT | Meitnerium |
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