infrared

adjective
in·​fra·​red | \ ˌin-frə-ˈred How to pronounce infrared (audio) , -(ˌ)frä-, -fə- \

Definition of infrared

1 : situated outside the visible spectrum at its red end used of radiation having a wavelength between about 700 nanometers and 1 millimeter
2 : relating to, producing, or employing infrared radiation infrared therapy
3 : sensitive to infrared radiation infrared sensors that detect body heat

Other Words from infrared

infrared noun

Examples of infrared in a Sentence

Recent Examples on the Web Then the lengthy process began to align the mirrors, get the infrared detectors cold enough to operate and calibrate the science instruments, all protected by a sunshade the size of a tennis court that keeps the telescope cool. Seth Borenstein, Orlando Sentinel, 12 July 2022 Then the lengthy process began to align the mirrors, get the infrared detectors cold enough to operate and calibrate the science instruments, all protected by a sunshade the size of a tennis court that keeps the telescope cool. Seth Borenstein, Anchorage Daily News, 12 July 2022 Then the lengthy process began to align the mirrors, get the infrared detectors cold enough to operate and calibrate the science instruments, all protected by a sunshade the size of a tennis court that keeps the telescope cool. Seth Borenstein, BostonGlobe.com, 12 July 2022 Then the lengthy process began to align the mirrors, get the infrared detectors cold enough to operate and calibrate the science instruments, all protected by a sunshade the size of a tennis court that keeps the telescope cool. Seth Borenstein, The Christian Science Monitor, 12 July 2022 Indeed, the difference between asteroid collisions and standard flares only appears to be in how the emission spectrum cools from X-ray to the ultraviolet and on to the visible and infrared. Chris Lee, Ars Technica, 17 Jan. 2022 Visible and infrared wavelength measurements on Earth suggest the metal-rich asteroid is shaped like a potato, according to a statement by NASA. Elizabeth Gamillo, Smithsonian Magazine, 4 Jan. 2022 These images of Mystic Mountain — a pillar of gas, dust and newborn stars in the Carina Nebula — show how observations taken in visible and infrared light reveal different details of an object. Denise Chow, NBC News, 24 Dec. 2021 Using powerful infrared technology, the new telescope reveals details that have never been seen before, like the gas and dust around stars. Meredith Deliso, ABC News, 14 July 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infrared.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of infrared

1881, in the meaning defined at sense 1

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Time Traveler for infrared

Time Traveler

The first known use of infrared was in 1881

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Dictionary Entries Near infrared

infra praesidia

infrared

infrared lamp

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Statistics for infrared

Last Updated

2 Aug 2022

Cite this Entry

“Infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infrared. Accessed 11 Aug. 2022.

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More Definitions for infrared

infrared

adjective
in·​fra·​red | \ ˌin-frə-ˈred How to pronounce infrared (audio) \

Kids Definition of infrared

: being, relating to, or producing rays like light but lying outside the visible spectrum at its red end

infrared

adjective
in·​fra·​red | \ ˌin-frə-ˈred How to pronounce infrared (audio) \

Medical Definition of infrared

 (Entry 1 of 2)

1 : lying outside the visible spectrum at its red end used of radiation having a wavelength between about 700 nanometers and 1 millimeter
2 : relating to, producing, or employing infrared radiation infrared therapy

infrared

noun

Medical Definition of infrared (Entry 2 of 2)

: infrared radiation

More from Merriam-Webster on infrared

Nglish: Translation of infrared for Spanish Speakers

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