| Acronym | Meaning |
| AIA | Aerospace Industry Association - American Institute Of Architects -Anguilla (ISO 3166 Trigram) |
| ATO | Air Tasking Order - Australian Taxation Office |
| YL | Yottalitre |
| ICZN | International Code Of Zoological Nomenclature - International Commission On Zoological Nomenclature |
| CFS | Chronic Fatigue Syndrome |
| EL | Greek Language (ISO 639-1 Code) |
| BIST | Built-In Self-Test |
| CEWC | Council For Education In World Citizenship |
| BMDG | British Military Doctrine Group |
| SHRA | Rain Showers (METAR Code) |