| Acronym | Meaning |
| NAAQS | National Ambient Air Quality Standards |
| SWAP | Surface Waters Acidification Programme |
| GEO | Geostationary Earth Orbit -Georgia (ISO 3166 Trigram) |
| C3 OR C? | Colorectal Cancer Condition - Command |
| CU | Copper (Latin Cuprum) |
| EGRET | Energetic Gamma-Ray Experiment Telescope |
| MMO | Massively Multiplayer Online (computer Game) |
| MOFA | Ministry Of Foreign Affairs (Japan) |
| PWA | Pirates With Attitude |
| WH | Wehrmacht Heer (German WW2 Army Vehicle Licence Plate Code) |