infrared

in·fra·red

adj \ˌin-frə-ˈred, -(ˌ)frä-, -fə-\

Definition of INFRARED

1

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

2

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

3

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

— infrared noun

First Known Use of INFRARED

1881

Rhymes with INFRARED

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