| Acronym | Meaning |
| SWORD | Subjective WORkload Dominance |
| DUSD | (U.S.) Deputy Under-Secretary Of Defense |
| NOSA | NATO OSI Security Architecture |
| SLK | Slovak Language (ISO 639-2 Code) |
| USTRANSCOM | United States Transportation Command |
| OCFS | Oracle Cluster File System |
| METAR | [Meteorological] Aviation Routine Weather Report |
| AR | Argon |
| LUCA | Last Universal Common Ancestor |
| BYS | Byelorussian Soviet Socialist Republic (ISO 3166 Trigram; Obsolete Since 1992) |