NASA Abbreviations and Acronyms

1. ETT
   Estimated Time of Track
2. ETU
   Engineering Test Unit
3. ETUD
   External Tank Umbilical Disconnect
4. ETV
   Electrical Test Vehicle
5. ETVA
   External Tank Vent Arm
6. EU
   Experimental Unit
7. EU
   Engineering Unit
8. EU
   Expander Unit
9. EUR
   Europe
10. EURECA
    European Retrievable Carrier
11. EUROCOMSAT
    European Consortium Communications Satellite
12. EUROCOMSATE
    European Consortium Communications Satellite
13. EUTELSAT
    European Telecommunications Satellite
14. EUV
    Extreme Ultraviolet
15. EUV
    Extreme Ultraviolet Vertical
16. EUVE
    Extreme Ultraviolet Experiment
17. EV
    Expendable Vehicles
18. EV
    Electron Volts
19. EV
    Extravehicular
20. EV88
    Experiment Version 88

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