| Acronym | Meaning |
| AND | Andorra (ISO 3166 Trigram) |
| MSL | Mars Science Laboratory - Mean Sea Level -Missile |
| QC | Quality Control -Qu?bec (postal Symbol) -Queen's Counsel |
| POI | Program Of Instruction |
| BRN | Brunei (ISO 3166 Trigram) |
| MIDAS | Man-machine Integration Design And Analysis System |
| BSOD | Blue Screen Of Death (distinct From BSD) |
| VTC | Video Tele-Conference |
| COTS | Commercial Off The Shelf |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |