| Title | infrared |
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Merriam-Webster's Collegiate Dictionary in·fra·red 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 English Etymology infra-red 1881, from infra- (q.v.) + red. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 infrared in·fra·red / 7infrE5red / adjective (physics 物) having or using electromagnetic waves which are longer than those of red light in the spectrum , and which cannot be seen 红外线的；使用红外线的: infrared radiation 红外辐射 an infrared lamp 红外线灯 ⇨ compare ultraviolet Webster's Third New International Dictionary, Unabridged Search result show the entry is found in: near-infrared , or infrared lampin·fra·red I. \|infrə|red, -ˌfrä|-, -ˌfrȧ|- sometimes |infə|r- by r-dissimilation\adjective Etymology: infra- + red 1. : lying outside the visible spectrum at its red end — used of thermal radiation of wavelengths longer than those of visible light 2. : relating to, producing, or employing infrared radiation < infrared therapy > < infrared photography > 3. : sensitive to infrared radiation and capable of photographing in darkness or through haze < infrared film > II. noun : infrared radiation |
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