far-in·​fra·​red ˈfär-ˌin-frə-ˈred How to pronounce far-infrared (audio)
: of or relating to the longer wavelengths of radiation in the infrared spectrum and especially to those between 10 and 1000 micrometers

Examples of far-infrared in a Sentence

Recent Examples on the Web In the 1970s, space scientists began using far-infrared and submillimeter-wave spectrometers for investigating the chemical compositions of the interstellar medium and planetary atmospheres. IEEE Spectrum, 7 Mar. 2024 Spitzer sees far-infrared light, which is emitted by warm gas and dust. Discover Magazine, 20 Nov. 2019 Near-infrared imaging is used for night vision security cameras or baby monitors, for example, and far-infrared is what Times visual journalist Jonah M. Kessel used to photograph Methane gas in 2019. Karsten Moran, New York Times, 10 Sep. 2023 The other two—one for x-rays, another for far-infrared—could launch later that decade or in the 2050s. Fabio Pacucci, Scientific American, 4 Apr. 2023 Wander the labyrinth walk, amble over to the far-infrared sauna, or just rest between classes on a floating bed and let the motion rock you to sleep. Liz Krieger, Town & Country, 1 Mar. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'far-infrared.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of far-infrared was in 1923

Dictionary Entries Near far-infrared

Cite this Entry

“Far-infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/far-infrared. Accessed 27 May. 2024.

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