NASA Abbreviations and Acronyms

1. ITRB
   Integrated Technical Review Board
2. ITRD
   Integrated Test Requirements Document
3. ITRDS
   Integrated Test Requirements Documents
4. ITRR
   Integrated Technology Requirements Review
5. ITS
   Interim Teleprinter System
6. ITS
   Integration & Test System
7. ITS
   Information Technology Security
8. ITS
   Instrumentation Telemetry Station
9. ITSEC
   Information Technology Security
10. ITSS
    Integrated Tactical Surveillance System
11. ITU
    International Telecommunication Union
12. ITU
    Input Terminal Unit
13. ITU-TSB
    International Telecommunication Union
14. ITVE
    Integrated Technology Validation Experiment
15. ITVF
    Integration
16. ITVM
    Integration
17. IU
    Interface Unit
18. IU
    Instrument Unit
19. IUA
    Interface Unit Adapter
20. IUA
    Inertial Unit Assembly

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