NASA Abbreviations and Acronyms

1. OPIDF
   Operational Planning Identification File
2. OPL
   Operational
3. OPL
   Open Problem List
4. OPM
   Office of Personnel Management
5. OPM
   Operations Message
6. OPN
   Open
7. OPN
   Operation
8. OPNL
   Operational
9. OPNS
   Operational Phase
10. OPNS
    Operations
11. OPO
    Operations Order
12. OPO
    Orbiter Project(s) Office
13. OPO
    Office Of Public Outreach
14. OPORD
    Operations Order
15. OPORDER
    Operations Order
16. OPORDER/OPORD
    Operations Order
17. OPOV
    Oxidizer Preburner Oxidizer Valve
18. OPP
    Oxygen Partial Pressure
19. OPP
    Opposite
20. OPP
    Opportunity

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