| Acronym | Meaning |
| PK | Picokelvin |
| AYM | Aymara Language (ISO 639-2 Code) |
| LCM | Least/Lowest Common Multiple |
| DBM | De Bellis Multitudinis (miniature Wargaming Rules) - Detection By Movement (military Target) |
| WY | Wyoming (postal Symbol) |
| SIC | Standard Industrial Classification |
| JY | Japanese Yen |
| AAFES | Army And Air Force Exchange Service |
| SDO | Scattered Disc Object |
| JSOA | Joint Special Operations Area |