| Acronym | Meaning |
 | OBSS | Off Board Sensor Systems - Ordo Byantinus Sancti Sepulchri (Byzantine Order Of The Holy Sepulchre) - Orbiter Boom Sensor System (space Shuttle) - Origins Billion Star Survey |
| NOSA | NATO OSI Security Architecture |
| RCAF | Royal Canadian Air Force |
| ASIO | Australian Security Intelligence Organisation -Audio Stream Input Output |
| MAS | NATO Military Agency For Standardisation |
| OSS | Ossetic Language (ISO 639-2 Code) |
| YT | Yoctotesla |
| BOP | Balance Of Payments |
| NO | Nitric Oxide -Normally Open -Norway (ISO 3166 And FIPS 10-4 Country Code Digram) |
| A | Ampere |
Browse by Letter:
