NASA Abbreviations and Acronyms

1. IUCS
   Instrumentation Update Command System
2. IUDS
   Integrated Utilities Distribution System
3. IUE
   International Ultraviolet Explorer
4. IUE
   Interface Unit Error Count Table
5. IUI
   Integrated User Interface
6. IUO
   Interunit Order
7. IURAP
   International User Resource Allocation Panel
8. IUS
   International Ultraviolet Explorer
9. IUS
   Interim/Intermediate Upper State
10. IUS
    Interim Use Sheet
11. IUS
    Interior Upper Stage
12. IV
    Interior Upper Stage
13. IV
    Interface Volume
14. IV
    Intravehicular
15. IV
    Initial Velocity
16. IV
    Integrated Vehicle
17. IVA
    Intra-Vehicular Activity
18. IVA
    Intravehicular Activity
19. IVA
    Intravehicular Activity (related To Spacecraft)
20. IVAR
    Internal Variable

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