English abbreviations from ir to irb
- IR(Infra-Red)
- IR&D(Independent Research and Development)
- IR/MMW(Infrared/Millimeter Wave)
- IR/VIS(Infrared/Visible)
- IRA(Individual Retirement Account||Irish Republican Army (see also List of organisations known as the Irish Republican Army for groups claiming descent from this organisation))
- IRAA(Internal Reference Amino Acid)
- IRAC((instrumentation) Infrared Array Camera, a mid-infrared imager on the Spitzer Space Telescope)
- IRAD(Internal Research and Development)
- IRAF((software) Image Reduction and Analisys Facility, a general-purpose professional data-processing package)
- IRAIT((telescope) International Robotic Antarctic Infrared Telescope)
- IRAM((organization) Institut de Radio Astronomie Millimetrique)
- IRAN(Inspect and Repair As Necessary)
- IRAS(Infrared Astronomical Satellite)
- IRB(Institutional review board)
