| Acronym | Meaning |
 | YL | Yottalitre |
| SSP | Submarine Transport (retired US Navy Hull Classification) |
| C4I OR C?I | Command |
| AAV | Amphibious Assault Vehicle |
| WEU | Western European Union |
| RATELO | Radiotelephone Operator |
| CT | Canton And Enderbury Islands (ISO 3166 Digram; Merged Into KI In 1984) - Central African Republic (FIPS 10-4 Country Code) - Connecticut (postal Symbol) |
| NDO | Ndonga Language (ISO 639-2 Code) |
| SR | Sound Reinforcement - Supply Route -Suriname (ISO 3166 Digram) -Sveriges Radio (Swedish Radio Ltd) |
| PHA | PolyHydroxyAlkanoate -Potentially Hazardous Asteroid |
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