| Acronym | Meaning |
| WAAF | Women's Auxiliary Air Force (WWII UK) |
| ZL | Zettalitre |
| IAFG | Information Assurance Focus Group |
| SWHR | Society For Women's Health Research |
| C4 OR C? | Command |
| AIRS | Aerometric Information Retrieval System (obsolete; Replaced With AFS) |
| LDL | Low-Density Lipoprotein |
| GTQ | Guatemalan Quetzal (ISO 4217 Currency Code) |
| DSID | Dismounted Soldier Identification System |
| EK | Equatorial Guinea (FIPS 10-4 Country Code) - Exakelvin |