| Acronym | Meaning |
 | NAAQS | National Ambient Air Quality Standards |
| SR | Sound Reinforcement - Supply Route -Suriname (ISO 3166 Digram) -Sveriges Radio (Swedish Radio Ltd) |
| OC | Occitan Language (ISO 639-1 Code) |
| EUS | Basque Language (ISO 639-2 Code) |
| SUNY | State University Of New York (usually Pronounced Sue-knee) |
| WXO | Weather [Executive] Officer |
| AAT | Australian Antarctic Territory |
| SSKP | Single-Shot Kill Probability |
| LNER | London And North Eastern Railway |
| USNH | United States Naval Hospital |
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