Governmental & Military Abbreviations and Acronyms

1. IRST
   infrared search track
2. IRSTS
   Infrared Search and Track System
3. IRT
   Instrument Rating Test
4. IRT
   Interrogation Repetition Time
5. IRT
   In Regards To
6. IRT
   In Real Time
7. IRT
   Issue Resolution Table
8. IRT
   Interborrough Rapid Transit
9. IRT
   Immigration Review Tribunal
10. IRT
    In Reference To
11. IRTCM
    Integrated Real-Time Contamination Monitor
12. IRTM
    Infrared Thermal Mapper
13. IRTS
    Infrared Temperature Sounder
14. IRTU
    International Road Transport Union
15. IRU
    Inertial Reference Unit
16. IRU
    Interactive Response Unit
17. IRU
    Investigation Review Unit
18. IRV
    Improved Inter-Range Vector
19. IRV
    Instant-Runoff Voting
20. IRV
    Incident Response Vehicle

Last updated: May 24, 2020 — Total entries: 74,797