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)
