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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When the barrier was removed, using near-infrared light to return the semi-solid gel to a liquid state, the researchers noticed that the Tpex cells were reactivated and had expanded into more potent, tumor-killing T cells. New Atlas, 16 July 2025 This technique, called functional near-infrared spectroscopy, or fNIRS, is considered complementary to EEG. IEEE Spectrum, 15 July 2025 The camera takes quick 15-second exposures every 20 seconds, capturing light from ultraviolet to near-infrared wavelengths. Kurt Knutsson, FOXNews.com, 14 July 2025 This composite picture combines Hubble's optical observations with James Webb's near-infrared imagery, showing new details into the region's complex interstellar landscape. Kenna Hughes-Castleberry, Space.com, 10 July 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 29 Jul. 2025.

Last Updated: - Updated example sentences
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