| Acronym | Meaning |
| CTDB | Compact Terrain Data Base (file Format) |
| CERGA | Centre De Recherches En G?odynamique Et Astrom?trie (French |
| NHO | N?ringslivets Hovedorganisasjon (Confederation Of Norwegian Enterprises |
| IO | Ido Language (ISO 639-1 Code) |
| LSO | Lesotho (ISO 3166 Trigram) |
| ZHA | Zhuang Language (ISO 639-2 Code) |
| ITEMS | Interactive Tactical Environment Management System |
| DSA | (U.S.) Defense Support Activities - Division Support Area |
| FUCK | For |
| MCA | Micro Channel Architecture - MultiChannel Analyzer |