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Definition of Infrared radiation

Infrared radiation Definition from Language, Idioms & Slang Dictionaries & Glossaries
hEnglish - advanced version

infrared radiation
infrared ray n : a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)

WordNet 2.0

Noun
1. electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
(synonym) infrared, infrared light, infrared emission
(hypernym) actinic radiation, actinic ray
Infrared radiation Definition from Government Dictionaries & Glossaries
DOD Dictionary of Military Terms
Radiation emitted or reflected in the infrared portion of the electromagnetic spectrum.
  
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )
Infrared radiation Definition from Science & Technology Dictionaries & Glossaries
General Chemistry Glossary
(IR) electromagnetic radiation with wavelength longer than visible light but shorter than that of microwaves . Infrared radiation is produced by hot objects; absorption of infrared radiation causes chemical bonds to vibrate.
Infrared radiation Definition from Encyclopedia Dictionaries & Glossaries
English Wikipedia - The Free Encyclopedia
Infrared (IR) is invisible radiant energy, electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz) to 1 mm (300 GHz) (although people can see infrared up to at least 1050 nm in experiments). Most of the thermal radiation emitted by objects near room temperature is infrared.

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Infrared radiation Definition from Society & Culture Dictionaries & Glossaries
EPA Glossary of Climate Change Terms
The heat energy that is emitted from all solids, liquids, and gases. In the context of the greenhouse issue, the term refers to the heat energy emitted by the Earth's surface and its atmosphere. Greenhouse gases strongly absorb this radiation in the Earth's atmosphere, and radiate some back towards the surface, creating the greenhouse effect. See radiation, greenhouse effect, enhanced greenhouse effect, global warming.
Provided as a public service by the U.S. Environmental Protection Agency. Reference list click here.