| Abbreviation | Definition |
|---|---|
| AFY | Acre- Feet per Year |
| AFY | Acre-Feet per Year |
| AH | Ampere Hour |
| AHT | Average Handle Time |
| AIDES | Alert Industrious Dedicated Energetic Service |
| AIMS | Arizonas Instrument To Measure Standards |
| ALU | Average Labor Unit |
| AM | Ante Meridiem |
| am | attometer |
| amp | amp??re |
| amp | ampère |
| AMU | Atomic Mass Units |
| ANTILOG | Antilogarithm |
| APL | Alcohol Per Liter |
| APM | Actions Per Melee |
| APM | Actions Per Minute |
| APMC | Attacks Per Melee Combat |
| APSF | Amperes Per Square Foot |
| ASK | Available Seat Kilometres |
| ASM | Available Seat Miles |