infrared
adjective Date: 1881 1. situated outside the visible spectrum at its red end — used of radiation having a wavelength between about 700 nanometers and 1 millimeter 2. relating to, producing, or employing infrared radiation <
infrared therapy
>
3. sensitive to infrared radiation <
infrared sensors that detect body heat
>
infrared noun

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • Infrared — In fra*red , Infra red In fra red , a. [Infra + red.] 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… …   The Collaborative International Dictionary of English

  • Infrared —   [engl.], infrarot …   Universal-Lexikon

  • infrared — ► NOUN ▪ electromagnetic radiation having a wavelength just greater than that of red light but less than that of microwaves, emitted particularly by heated objects. ► ADJECTIVE ▪ of or relating to such radiation …   English terms dictionary

  • infrared — [in΄frə red′, in′frə red΄] adj. designating or of those invisible rays just beyond the red end of the visible spectrum: their waves are longer than those of the spectrum colors but shorter than radio waves, and have a penetrating heating effect:… …   English World dictionary

  • Infrared — For other uses, see Infrared (disambiguation). An image of two people in mid infrared ( thermal ) light (false color) …   Wikipedia

  • infrared — That portion of the electromagnetic spectrum with wavelengths between 730 and 1000 nm. * * * in·fra·red .in frə red adj 1) lying outside the visible spectrum at its red end used of radiation having a wavelength between about 700 nanometers and 1… …   Medical dictionary

  • infrared — [[t]ɪ̱nfrə re̱d[/t]] also infra red 1) ADJ: ADJ n Infrared radiation is similar to light but has a longer wavelength, so we cannot see it without special equipment. 2) ADJ: ADJ n Infrared equipment detects infrared radiation. ...searching with… …   English dictionary

  • infrared — /in freuh red /, 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. 2. noting or pertaining to the infrared or… …   Universalium

  • infrared — 1. noun electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm 2. adjective a) Having the wavelen …   Wiktionary

  • infrared — That portion of the electromagnetic spectrum with a wavelength longer than deep red light (wavelength between 7800 and 1,000,000 angstroms and just slightly longer than the longest wavelength of visible light), thus not visible but sensed as heat …   Aviation dictionary

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