NASA Abbreviations and Acronyms

1. O/C
   Operations Critical
2. O/R
   outside radius
3. O/R
   Oxygen Relief
4. S/N
   Serial Number
5. S/N
   Stress Number
6. U/D
   Update
7. U/W
   Used With
8. NCS
   Nutation Control System
9. NCS
   Nicmos Cooling System
10. ACPL
    Assembly Component Parts List
11. AMPY
    Ampere
12. ANT
    Antigua and Barbuda
13. C TO C
    Center To Center
14. C TO C
    computer-to-computer
15. C/C
    Center To Center
16. C/C
    Configuration Control
17. C/C
    communication and control
18. C/C
    command and control (also C2)
19. C/C
    Carbon-Carbon
20. C/C
    Combustion Chamber

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