| Acronym | Meaning |
| AR | Argon |
| DMS | U.S. Defense Message System |
| ECJ | European Court Of Justice |
| HSC | High School Certificate (as Used In New South Wales) |
| METAR | [Meteorological] Aviation Routine Weather Report |
| DHSS | UK Department Of Health And Social Security |
| ELL | Greek Language (ISO 639-2 Code) |
| DLSA | (U.S.) Defense Legal Services Agency |
| VSO | Voluntary Services Overseas |
| YAC | Youth-Adult Committee |