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

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The authors previously were able to confer near-infrared vision to mice by injecting nanoparticles that bind to photoreceptors into their eyes—basically creating a near-infrared nanoantenna—but realized that most people would be averse to the prospect of sticking needles in their eyes. Jennifer Ouellette, ArsTechnica, 22 May 2025 Sam Cutler, a Ph.D. student in astronomy at the University of Massachusetts Amherst, has worked with Hubble data throughout his academic career, even contributing to the telescope’s widest near-infrared (NIR) image of the universe. Discover Magazine, 20 May 2025 Owen, now based at the University of Western Ontario, recently published a study using functional near-infrared spectroscopy, which shines a light through the skull. Sarah Zhang, The Atlantic, 16 May 2025 Its 808 nm near-infrared light sends cold lasers into the skin to achieve this goal—hence no risk of heat damage, unlike most alternative options. Justin Fenner, Robb Report, 12 May 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 10 Jun. 2025.

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