Hypertext Webster Gateway: "infrared"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Infra-red \In`fra-red"\, a. [Infra- + red.] (Physics)
Lying outside the visible spectrum at its red end; -- said of
rays less refrangible than the extreme red rays.
From WordNet (r) 1.7 (wn)
infrared
adj : having or employing wavelengths longer than light but
shorter than radio waves; lying outside the visible
spectrum at its red end; "infrared radiation";
"infrared photography"
n 1: the infrared part of the electromagnetic spectrum;
electromagnetic wave frequencies below the visible
range; "they could sense radiation in the infrared"
[syn: {infrared frequency}]
2: electromagnetic radiation with wavelengths longer than
visible light but shorter than radio waves [syn: {infrared
light}, {infrared radiation}, {infrared emission}]
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