NASA Abbreviations and Acronyms

1. SIR
   Systems Integration Review
2. u&o
   Used On
3. ACTA
   Activate Test Article
4. AISC
   American Institute of Steel Construction, Inc.
5. CIV
   Civil Engineering
6. D/A
   Digital-To-Analog
7. D/A
   decoder activate
8. D/P
   Drain and Purge
9. D/P
   data pack
10. G
    Ground
11. G
    Giga (billion)
12. G
    Units of Gravitational Force
13. G
    Iwg Ground Interface Working Group
14. G
    Low Gross Lift-off Weight
15. G
    Low Ground Lift-off Weight
16. G
    Ccc Ground Control Computer Center
17. G
    F&pgases
18. G/A
    Ground To Air
19. G/A
    General and Administrative Overhead
20. G/A
    General and Administrative

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