| Acronym | Meaning |
| YS | Yottasecond |
| ACLOS | Automatic CLOS (missile Control System) |
| NDAA | U.S. National Defense Authorization Act |
| NREL | U.S. National Renewable Energy Laboratory |
| ZJ | Zeptojoule |
| JFACC | Joint Force Air Component Commander |
| PI | PolyImide - PolyIsoprene - Private Investigator |
| TND | Tunisian Dinar (ISO 4217 Currency Code) |
| UNMIK | United Nations Interim Administration Mission In Kosovo |
| ZUL | Zulu Language (ISO 639-2 Code) |