| Acronym | Meaning |
 | AY | Antarctica (FIPS 10-4 Territory Code) |
| SD | Sheriff's Department - Smoke/Decontamination-South Dakota (postal Symbol) - Sudan (ISO 3166 Digram) |
| NMR | Nuclear Magnetic Resonance |
| PBT | PolyButylene Terephthalate |
| UDP | User Datagram Protocol |
| NGS | Naval Gunfire Support |
| NAVSPASUR | U.S. Naval Space Surveillance System |
| FEC. | Fecit (Latin |
| MRSA | Methicillin-resistant Staphylococcus Aureus |
| IJWP | Interim Joint Warfare Publication |
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