near-infrared

adjective

near-in·​fra·​red ˌnir-ˌin-frə-ˈred How to pronounce near-infrared (audio)
-(ˌ)frä-
: of or relating to the shorter wavelengths of radiation in the infrared spectrum and especially to those between 0.7 and 2.5 micrometers

Examples of near-infrared in a Sentence

Recent Examples on the Web
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Through near-infrared interferometry, a process that combines light from multiple telescopes, the CHARA Array was able to capture in high resolution the rapidly changing conditions of their early post-explosion phase. Ritsuko Kawai, Wired News, 19 Jan. 2026 So let’s review: red light, yellow light, green light, blue light, LED, nanometers, near-infrared, far-infrared, 510 (k). Brennan Kilbane, Allure, 15 Jan. 2026 The team chose near-infrared wavelengths that can pass through the skull and several centimeters of brain tissue, allowing the devices to be powered from outside the body. William A. Haseltine, Forbes.com, 29 Dec. 2025 In its present form, the technology utilizes two spectrometers to perform near-infrared and mid-infrared scans of the top surfaces and undersides of leaves immediately adjacent to the fruits. New Atlas, 20 Dec. 2025 See All Example Sentences for near-infrared

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of near-infrared was in 1950

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Cite this Entry

“Near-infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/near-infrared. Accessed 16 Feb. 2026.

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