NASA Abbreviations and Acronyms

1. ESTEC
   European Space Research & Technology Center
2. ET
   Edge Thickness
3. ET
   Elevated Temperature
4. ET
   Event Timer
5. ET-SEP
   External Tank Separation
6. ETA
   Environmental Test Article
7. ETA
   Estimated Time To Acquisition
8. ETA
   Explosive Transfer Assembly
9. ETA
   External Tank Attachment
10. ETB
    Equipment Transfer Bag
11. ETC
    Estimate To Complete
12. ETC
    Earth Terrain Camera
13. ETC
    Greenbelt
14. ETCO
    equipment transfer/change order
15. ETD
    Electrical Terminal Distributor
16. ETD
    Estimated Turnover Date
17. ETD
    External Tank Door
18. ETE
    End To End
19. ETE
    Extension
20. ETEDB
    External Thermal Environment Data Base

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