| Acronym | Meaning |
 | RMDA | Records Management And Declassification Agency |
| AA | Achieved Availability - Alcoholics Anonymous -Armed Forces Americas (postal Symbol) - Aruba (FIPS 10-4 Territory Code) -Assembly Area - Automobile Association- Avenue Of Approach |
| MASAS | Monte Agliale Supernovae And Asteroid Survey |
| RSPCA | Royal Society For The Prevention Of Cruelty To Animals |
| SAU | Saudi Arabia (ISO 3166 Trigram) |
| DBE | Dame Commander Of The Order Of The British Empire |
| ZL | Zettalitre |
| HIN | Hindi Language (ISO 639-2 Code) |
| PPCLI | Princess Patricia's Canadian Light Infantry (regiment) |
| ISTC | U.K. Institute Of Scientific And Technical Communications |
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