NASA Abbreviations and Acronyms

1. OP
   Oxygen Purge
2. OP
   Operations Procedures
3. OPA
   Operations Planning Analysis
4. OPB
   Oxidizer Preburner
5. OPBOV
   Oxidizer Preburner Oxidizer Valve
6. OPCONCTR
   Operations Control Center
7. OPD
   Optical Path Difference
8. OPD
   Operations Department Of St Sci
9. OPDAR
   Optical Detection and Ranging
10. OPE
    Other Project Element
11. OPE
    Oru Protective Enclosure
12. OPER
    Operation
13. OPER
    Operational
14. OPER
    Operate
15. OPER
    Operations
16. OPER SYST
    Operating System
17. OPF
    Orbiter Processing Facility
18. OPF
    Official Personnel File
19. OPFC
    Orbiter Preflight Checklist
20. OPGUID
    Optimum Guidance (technique)

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