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Infra-red   Listen
adjective
Infra-red, Infrared  adj.  
1.
(Physics) Lying outside the visible spectrum at its red end; said of rays having a longer wavelength (and thus less refrangible) than the extreme red rays, specifically those electromagnetic waves having a wavelength of between 700 nanometers and 1 millimeter.
2.
Relating to, using, or producing infrared radiation.
3.
Affected by infrared radiation; as, infrared detector; infrared film.






Collaborative International Dictionary of English 0.48








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"Infra-red" Quotes from Famous Books



... something queer going on, Walter," he remarked. "This thing registers some kind of wireless rays—infra-red, I think,— something like those that they say that Italian scientist, Ulivi, claims he has discovered ...
— The Exploits of Elaine • Arthur B. Reeve

... beams went through the range of radiation, through radio and short radio, infra-red, visible light, ultra-violet, X-ray, the gammas and the cosmics—a terrific flood of billions ...
— Empire • Clifford Donald Simak

... He took his goggles and brought them down over his eyes, adjusting the helmet on his head. Boyd did the same. Malone flicked on the infrared flashlight he held in ...
— The Impossibles • Gordon Randall Garrett



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