| Acronym | Meaning |
 | UNGEGN | United Nations Group Of Experts On Geographic Names |
| STP | S?o Tom? And Prncipe (ISO 3166 Trigram) -Standard Temperature And Pressure |
| IFRB | International Frequency Registration Board |
| NNW | North North-West |
| AG | Attogram |
| NAVCENT | Naval Forces U.S. Central Command |
| CA | Calcium |
| USAAVNC | U.S. Army AViatioN Center |
| FRY | Federal Republic Of Yugoslavia |
| TK | Turkmen Language (ISO 639-1 Code) |
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