| Acronym | Meaning |
| AAT | Australian Antarctic Territory |
| YAC | Youth-Adult Committee |
| MPEC | Minor Planet Electronic Circular |
| SEAD | Suppression Of Enemy Air Defence |
| SIC | Standard Industrial Classification |
| AFS&A OR AFSA | U.S. Air Force Studies And Analysis |
| MKD | Macedonian Language (ISO 639-2 Code) |
| PTUI | Plain-Text User Interface (pa-too-ey) (cf CLI) |
| SPAAG | Self-Propelled Anti-Aircraft Gun |
| PAYE | Pay As You Earn |