near-infrared radiation

American  

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

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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Etymology

Origin of near-infrared radiation

First recorded in 1940–45

Example Sentences

Four hours later, they applied near-infrared radiation to the mice to activate the photo-oxidants to attack the cancer cells.

From Science Daily • Sep. 20, 2023