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infrared
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As a noun, infrared means the electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm. As an adjective, it means having a wavelength in the infrared spectrum.
Meanings of infrared
6 meaningsnoun
The electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm.
A specific wavelength in this range.
A device that emits infrared radiation.
The infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
“they could sense radiation in the infrared”
Similar: infrared frequency
adjective
Having a wavelength in the infrared spectrum.
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”
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).