| Acronym | Meaning |
 | SSC | Safe |
| ROWPU | Reverse Osmosis Water Purification Unit (roe-pew) |
| PTUI | Plain-Text User Interface (pa-too-ey) (cf CLI) |
| KBO | Kuiper Belt Object |
| NLP | Natural Language Processing - Neuro-Linguistic Programming (pseudoscience) |
| SK | Saskatchewan (postal Symbol) - Slovakia (ISO 3166 Digram) |
| NWHN | U.S. National Women's Health Network |
| NAC | National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command |
| NRA | National Rifle Association |
| NASDAQ | National Association Of Securities Dealers Automated Quotations (an American Stock Exchange). |
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