| Acronym | Meaning |
 | BLOB | Binary Large OBject |
| USAPATRIOT | Uniting And Strengthening America By Providing Appropriate Tools Required To Intercept And Obstruct Terrorism |
| NCB | National Codification Bureau |
| PPQT | Pre-Production Qualification Test |
| 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 |
| JIB | Joint Information Bureau |
| YI | Serbia And Montenegro (deprecated FIPS 10-4 Country Code |
| PMCS | Partial Mission Capable Supply (SM&R Code) - Power Management Control System - Professional Military Comptroller School |
| ONC | Orthopaedic Nurse Certified |
| ET | Estonian Language (ISO 639-1 Code) |
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