| Acronym | Meaning |
| UNCF | United Negro College Fund |
| YC | Yoctocoulomb |
| AFATDS | Advanced Field Artillery Tactical Data System |
| RUS | Russia (ISO 3166 Trigram) |
| EEZ | Economic Exclusion Zone Or Exclusive Economic Zone |
| PW | Palau (postal Symbol; ISO 3166 Digram) - Petawatt |
| ARCENT | United States Army Central Command |
| STANAG | (NATO) Standardisation Agreement |
| FIFRA | Federal Insecticide |
| FET | Field-Effect Transistor |