| Acronym | Meaning |
| AX | land Islands (ISO 3166 Digram) |
| TA | Tantalum |
| AGU | American Geophysical Union |
| OTI | Office Of Transition Initiatives (United States Agency For International Development) |
| KSM | Korean Service Medal |
| EU | Europium |
| NODEF | NATO Oceanographic Data Exchange Format |
| TMA | Texas Medical Association |
| SCM | Surface Contamination Module |
| SK | Slovak Language (ISO 639-1 Code) |