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infrared

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adjective in·fra·red \ˌin-frə-ˈred, -(ˌ)frä-, -fə-\

Simple Definition of infrared

  • : producing or using rays of light that cannot be seen and that are longer than rays that produce red light

Source: Merriam-Webster's Learner's Dictionary

Full Definition of infrared

  1. 1 :  situated outside the visible spectrum at its red end —used of radiation having a wavelength between about 700 nanometers and 1 millimeter

  2. 2 :  relating to, producing, or employing infrared radiation <infrared therapy>

  3. 3 :  sensitive to infrared radiation <infrared sensors that detect body heat>

infrared noun

INFRARED Defined for Kids

infrared

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adjective in·fra·red \ˌin-frə-ˈred\

Definition of infrared for Students

  1. :  being, relating to, or producing rays like light but lying outside the visible spectrum at its red end




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