NASA Abbreviations and Acronyms

1. PRL
   Priority Rate Limiting
2. PRM
   Prime
3. PRM
   Payload Retention Mechanism
4. PRM
   Pulse Rate Modulation
5. PRN
   Program Release Notice
6. PRN
   Pulse Range Navigation
7. PRO
   Proceed
8. PROC
   Proceed
9. PROC
   Procurement
10. PS
    Pressure
11. PS
    Parachute Subsystem
12. PS
    Payload Specialist
13. PS
    Payload Station
14. PS
    Payload Support
15. PS
    Pressure Seal
16. PS
    Power Supply
17. PS
    Prime Select
18. PS/FC
    Power Supply/Fuel Cell
19. PSA
    Payload Service Area
20. PSA
    Preferred Storagearea

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