infrared
adjective
in·fra·red
ˌin-frə-ˈred 
-(ˌ)frä-,
-fə-
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
infrared
noun
Examples of infrared in a Sentence
Recent Examples on the Web
An infrared webcam and a fingerprint reader in the palm rest provide biometric security.
—
PCMAG, 19 Jan. 2025
True wellness junkies will appreciate the infrared heat and nerve-calming PEMF frequencies of the celebrity-beloved HeatHealer Body Belt.
—Jessica Ourisman, Forbes, 18 Jan. 2025
The infrared glow created was captured by JWST, revealing details that look like knots and whorls found in wood grain.
—Greg Wehner, Fox News, 16 Jan. 2025
Why one scientist thinks so Guinan says that proponents of the theory believe more infrared imaging and spectroscopy analysis of Venus' atmosphere could provide some answers to these major questions, and thinks a mission to Venus would prove invaluable in this case.
—Monisha Ravisetti, Space.com, 16 Jan. 2025
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PCMAG, 19 Jan. 2025
True wellness junkies will appreciate the infrared heat and nerve-calming PEMF frequencies of the celebrity-beloved HeatHealer Body Belt.
—Jessica Ourisman, Forbes, 18 Jan. 2025
The infrared glow created was captured by JWST, revealing details that look like knots and whorls found in wood grain.
—Greg Wehner, Fox News, 16 Jan. 2025
Why one scientist thinks so Guinan says that proponents of the theory believe more infrared imaging and spectroscopy analysis of Venus' atmosphere could provide some answers to these major questions, and thinks a mission to Venus would prove invaluable in this case.
—Monisha Ravisetti, Space.com, 16 Jan. 2025
See all Example Sentences for infrared
Dictionary Entries Near infrared
Cite this Entry
“Infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infrared. Accessed 26 Jan. 2025.
Copy CitationKids Definition
infrared
adjective
in·fra·red
ˌin-frə-ˈred
-(ˌ)frä-
: being, relating to, producing, or using rays like light but lying outside the visible spectrum at its red end
infrared radiation
infrared
noun
Medical Definition
infrared
1 of 2 adjective
in·fra·red
ˌin-frə-ˈred
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
2 of 2 noun
: infrared radiation
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