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Dictionary

in•fra•red

Pronunciation: (in"fru-red'), [key]
—n.
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.
noting or pertaining to the infrared or its component rays: infrared radiation. Cf. ultraviolet. Also,in"fra-red'.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

infrangible

infrared astronomy

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