NASA Abbreviations and Acronyms

1. IOC
   Initial Operational Capability
2. IOC
   Input/Output Controller
3. IOC
   Initial Operational Concept
4. IOC
   Indirect Operating Costs
5. IOC
   Interim Operational Capability
6. IOCP
   ITS On-board Computer Program
7. IOCU
   Input/Output Control Unit
8. IOD
   Initial Orbit Determination
9. IOE
   Input/Output Error Log Table
10. IOF
    Initial Operational Flight
11. IOHA
    Integrated Operating Hazard Analysis
12. IOIT
    I
13. IOL
    Interoffice Letter
14. IOM
    Input/Output Module
15. IONET
    Internet Protocol Operational Network
16. IOP
    In-Orbit Plane
17. IOP
    Initial Operational Capability
18. IOP
    Integrated Operation Plan
19. IOP
    Intensive Observing Period
20. IOP
    Interoperability Plenary

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