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near-infrared radiation

[ neer-in-fruh-red rey-dee-ey-shuhn ]

noun

  1. the shorter wavelengths of electromagnetic radiation in the infrared region of the spectrum, extending from about 0.75 to 2.5 micrometers, usually radiation reflected from plant materials.


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Word History and Origins

Origin of near-infrared radiation1

First recorded in 1940–45

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