| Acronym | Meaning |
 | OSETI | Optical SETI |
| JO | Jordan (FIPS 10-4 Country Code; ISO 3166 Digram) |
| AAPC | Accounting And Auditing Policy Committee |
| PANS | Pretty Advanced/Awesome Network Services (cf. POTS) |
| RTFM | Read The Fucking/Fine Manual |
| RPG | (US-CA) Regional Planning Group - Report Program Generator - Rocket Projectile Gun - Rocket-Propelled Grenade - Role-Playing Game |
| PLO | Palestine Liberation Organization |
| GRAS | Generally Regarded As Safe (FDA List) |
| NICHD | National Institute Of Child Health And Human Development [4] |
| ROWPU | Reverse Osmosis Water Purification Unit (roe-pew) |
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