NASA Abbreviations and Acronyms

1. OMB
   Office of Management and Budget
2. OMBUU
   Orbiter Midbody Umbilical Unit
3. OMC
   Orbiter Maintenance and Checkout
4. OMCF
   Orbiter Maintenance and Checkout Facility
5. OMD
   Orbiter Mating Device
6. OMDRI
   Operations and Maintainability Data Record
7. OME
   Orbiter Main Engine
8. OME
   Orbital Maneuvering Engine
9. OME
   Orbital Main Engine
10. OMI
    Ozone Monitoring Instrument
11. OMIS
    Operational Management Information System
12. OML
    Outer Mold Line
13. OMMH
    Orbiter Maintenance Man-Hours
14. OMNI
    Omni-Range
15. OMNI
    Omnidirectional
16. OMP
    Operations and Maintenance Plan
17. OMPT
    Observed Mass Point Trajectory
18. OMR
    Operations and Maintenance Requirements
19. OMR
    Operations Management Room
20. OMRB
    Operating Material Review Board

Last updated: May 6, 2025 — Total entries: 14,020