Meaning of INFRARED in English

I. |infrə|red, -ˌfrä|-, -ˌfrȧ|- sometimes |infə|r- by r-dissimilation adjective

Etymology: infra- + red

1. : lying outside the visible spectrum at its red end — used of thermal radiation of wavelengths longer than those of visible light

2. : relating to, producing, or employing infrared radiation

infrared therapy

infrared photography

3. : sensitive to infrared radiation and capable of photographing in darkness or through haze

infrared film

II. noun

: infrared radiation

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.