| Acronym | Meaning |
| A2C2 OR A?C? | Army Airspace Command And Control |
| IBS | Irritable Bowel Syndrome |
| HI | Hindi Language (ISO 639-1 Code) |
| ADW | Air Defence Warning |
| ASX | Advanced Stream Redirector - Australian Stock Exchange |
| AFRC | Air Force Reserve Command |
| IST | Information System Technology - UCF Institute For Simulation And Training |
| XCBL | XML Common Business Library |
| RF | Radio Frequency - Receptive Field (neurophysiology) |
| RCMP | Royal Canadian Mounted Police |