near-infrared radiation

[ neer-in-fruh-redrey-dee-ey-shuhn ]
/ ˈnɪərˌɪn frəˈrɛd reɪ diˌeɪ ʃən /

noun

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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Also called near-red ra·di·a·tion [neer-redrey-dee-ey-shuhn], /ˈnɪərˈrɛd reɪ diˌeɪ ʃən/, so·lar in·fra·red ra·di·a·tion [soh-ler] /ˈsoʊ lər/ .

Origin of near-infrared radiation

First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020