IRR
From Wikipedia, the free encyclopedia
IRR is a three-letter acronym that may refer to:
- In finance, the internal rate of return
- In computer science, Interrupt Request Register, used to indicate interrupts awaiting service
- In electrical engineering, the image rejection ratio
- In computer networking, the Internet Routing Registry
- In art conservation-restoration, Infrared reflectography
- The Individual Ready Reserve (often wrongly referred to as the "Inactive Ready Reserve") of the United States Military.
- The Iranian rial
- Iraqi Republic Railways
- The Institute of Race Relations and its newsletter, the Independent Race and Refugee News Network
- Integra Realty Resources, the largest real estate appraisal company in the U.S.
- The Australian Incident Response Regiment
- In Sheffield, England
- In UK Law, the Ionising Radiations Regulations 1999
- Irrlicht - graphic engine
- Ionic radius ratio
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