infrared


infrared
That portion of the electromagnetic spectrum with wavelengths between 730 and 1000 nm.

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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 millimeter
2) relating to, producing, or employing infrared radiation <\infrared therapy>
infrared n infrared radiation

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in·fra·red (in-frə-redґ) denoting thermal radiation of wavelength greater than that of the red end of the visible spectrum, between the red waves and the radio waves, having wavelengths between 0.75 and 1000 μm. Infrared rays emanating from tissues are the basis of thermography.

Medical dictionary. 2011.

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 — 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.… …   New Collegiate 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