NASA Abbreviations and Acronyms

1. EVMU
   Extra Vehicular Mobility Unit
2. EVO
   Engineering Verification Order
3. EVS
   Equipment Visibility System
4. EVSC
   Extravehicular Suit Communications
5. EVSS
   Extravehicular Space Suit
6. EVSTC
   Extravehicular Suit Telecommunications
7. EVSU
   Extravehicular Space Unit
8. EVT
   Extravehicular Transfer
9. EVT
   Engineering Verification Test
10. EVVA
    Extravehicular Visor Assembly
11. EW
    Energy-To-Weight Ratio
12. EW
    Electronic Warfare
13. EWA
    Estimated Warehouse Arrival
14. EWE
    Emergency Window Escape
15. EWF
    Electronic Warfare
16. EWM
    Engineering Wring-out Meeting
17. EWO
    Engineering Work Order
18. EWR
    Engineering Work Request
19. EWW
    Extended Workweek
20. EX
    Definition

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