| Acronym | Meaning |
 | CO | Many |
| OPSEC | Operations Security - Open Platform For Security |
| FSO | Fire Support Officer - Flotilla Staff Officer - Foreign Service Officer |
| KYD | Cayman Islands Dollar (ISO 4217 Currency Code) |
| PCI | U.S. Pacific Islands Trust Territory (ISO 3166 Trigram; Obsolete 1986) -Peripheral Component Interconnect (computer Bus) |
| NO | Norwegian Language (ISO 639-1 Code) |
| IFC | International Finance Corporation (part Of The World Bank) -Independent Film Channel |
| WEZ | Weapon Engagement Zone |
| PTFE | PolyTetraFluoroEthylene |
| MPSI | Member Of The Pharmaceutical Society Of Ireland |
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