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Definition of Infrared light
1. Noun. Electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves.
Exact synonyms: Infrared, Infrared Emission, Infrared Radiation
Generic synonyms: Actinic Radiation, Actinic Ray
Generic synonyms: Actinic Radiation, Actinic Ray
Medical Definition of Infrared light
1. See: infrared. Invisible light, historic term for X-rays. (05 Mar 2000)