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

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Other Words from infrared

infrared noun

Examples of infrared in a Sentence

Recent Examples on the Web Harley’s team used infrared cameras to measure similar temperatures on the rocky shoreline where the sea creatures once lived. Shi En Kim, Smithsonian Magazine, 12 July 2021 Detecting leaks early and often, through technology such as infrared cameras or satellite imaging, can also help plug up leaks. Irina Ivanova, CBS News, 9 July 2021 Harley’s research team used infrared cameras to measure temperatures on the shoreline rocks, recording some readings as high as 122 degrees. With mechanisms to keep from drying out, mussels are able to withstand high temperatures. Sammy Westfall, Anchorage Daily News, 8 July 2021 Harley’s research team used infrared cameras to measure temperatures on the shoreline rocks — recording some readings as high as 122 degrees. With mechanisms to keep from drying out, mussels are able to withstand high temperatures. Washington Post, 8 July 2021 Modern acoustic sensors and infrared cameras can detect a diesel engine from multiple miles away. Eric Tegler, Forbes, 23 June 2021 The three videos released by the Navy were filmed by infrared cameras. Andrew Dyer, San Diego Union-Tribune, 29 May 2021 Many of the latest drones used by law enforcement can be fitted with an array of attachments, such as infrared thermal cameras, spotlights and powerful zoom lenses. David Chanen, Star Tribune, 21 May 2021 An infrared camera is being used in the search from the air. Cliff Pinckard, cleveland, 18 June 2021

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.

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First Known Use of infrared

1881, in the meaning defined at sense 1

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Learn More About infrared

Time Traveler for infrared

Time Traveler

The first known use of infrared was in 1881

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Statistics for infrared

Last Updated

21 Jul 2021

Cite this Entry

“Infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infrared. Accessed 24 Jul. 2021.

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More Definitions for infrared

infrared

adjective

English Language Learners Definition of infrared

technical : producing or using rays of light that cannot be seen and that are longer than rays that produce red light

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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