infrared: Meaning and Definition of

in•fra•red

Pronunciation: (in"fru-red'), [key]
— n.
  1. the part of the invisible spectrum that is contiguous to the red end of the visible spectrum and that comprises electromagnetic radiation of wavelengths from 800 nm to 1 mm.
—adj.
  1. noting or pertaining to the infrared or its component rays:Cf. ultraviolet. infrared radiation.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also:
infrangible infrared astronomy
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