| Acronym | Meaning |
 | PW | Palau (postal Symbol; ISO 3166 Digram) - Petawatt |
| PCIE | Peripheral Component Interconnect Express (computer Bus) |
| HE | Helium |
| VCNO | (U.S.) Vice Chief Of Naval Operations |
| NAC | National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command |
| PLCC | Plastic Leaded Chip Carrier (electronics) |
| TUK | Turkmen Language (ISO 639-2 Code) |
| NSABB | National Science Advisory Board For Biosecurity |
| IST | Information System Technology - UCF Institute For Simulation And Training |
| VI | Vietnamese Language (ISO 639-1 Code) |
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