| Acronym | Meaning |
 | TANSTAAFL | There Ain't No Such Thing As A Free Lunch (coined By Author Robert A. Heinlein In His The Moon Is A Harsh Mistress) |
| GCCS | Global Command And Control System (geeks) |
| GISS | General Impression Of Size And Shape - Goddard Institute For Space Studies |
| SPQR | Senatus Populus Que Romanus (Latin The Senate And The People Of Rome) |
| FAO | Food And Agriculture Organization |
| TERS | Tactical Event Reporting System |
| OPEC | Organization Of Petroleum Exporting Countries |
| SARA | Southeastern Association For Research In Astronomy - Scientific Atlanta Resident Application - Scottish Amateur Rowing Association - Southern African Railway Association - State Administration For Religious Affairs |
| OC | Occitan Language (ISO 639-1 Code) |
| NB | New Brunswick (postal Symbol) -nota Bene (Latin |
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