| Acronym | Meaning |
| ALTACS | Automated Decision Logic Tactical Air Combat Simulation |
| URI | Uniform Resource Identifier |
| GTG | Got To Go (Internet Chat) |
| LIFO | Last In |
| PLB | Personal Locator Beacon |
| HF | High Frequency |
| AT | Anti-Tank -Ashmore And Cartier Islands (FIPS 10-4 Territory Code) - Austria (ISO 3166 Digram) -Advanced Technology (IBM Personal Computer/AT) |
| BBL | Be Back Later - Bird Banding Laboratory - British Basketball League |
| YW | Yoctowatt |
| TF | French Southern Territories (ISO 3166 Digram) -Task Force -Terafarad |