NASA Abbreviations and Acronyms

1. OXCO
   Oven-Controlled Crystal Oscillator
2. OXD
   Oxide
3. OXD
   Oxidizer
4. OXDZR
   Oxidizer
5. OXID
   Oxidizer
6. OZ
   Ozone
7. PA
   Pulse Amplifier
8. PA
   Plan of Action
9. PA
   Product Assurance
10. PA
    Pad Abort
11. PA
    Paging and Area Warning
12. PA
    Performance Assurance
13. PAA
    Program Alignment & Analysis
14. PAA
    Phased Array Antenna
15. PAC
    Pressure Alpha Center
16. PAC
    Problem Action Center
17. PACAS
    Personnel Access Control Accountability System
18. PACC
    Problem Action Control Center
19. PACE
    Prelaunch Automatic Checkout Equipment
20. PACK
    Package

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