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
Equipped with a camera that can switch between modes — including infrared to spot people in distress — responders can communicate instructions through a speaker.
—
Manuel Bojorquez, CBS News, 9 Aug. 2024
Ingesting 10-30g of collagen in the form of food or supplement daily can improve skin elasticity and appearance, as can exposure to red light and near infrared light therapy for 10-15 minutes 3-5 times per week.
—James Hibberd, The Hollywood Reporter, 9 Aug. 2024
It’s also equipped with several types of light (including red, infrared, deep red, blue, and amber) to target acne, hyperpigmentation, fine lines, and wrinkles in varying parts of the face.
—Macaela MacKenzie, Glamour, 8 Aug. 2024
The Webb telescope uses infrared waves to pick up information on these clouds and allows scientists a glimpse through them at the galaxy's center.
—Cybele Mayes-Osterman, USA TODAY, 8 Aug. 2024
See all Example Sentences for infrared 
Manuel Bojorquez, CBS News, 9 Aug. 2024
Ingesting 10-30g of collagen in the form of food or supplement daily can improve skin elasticity and appearance, as can exposure to red light and near infrared light therapy for 10-15 minutes 3-5 times per week.
—James Hibberd, The Hollywood Reporter, 9 Aug. 2024
It’s also equipped with several types of light (including red, infrared, deep red, blue, and amber) to target acne, hyperpigmentation, fine lines, and wrinkles in varying parts of the face.
—Macaela MacKenzie, Glamour, 8 Aug. 2024
The Webb telescope uses infrared waves to pick up information on these clouds and allows scientists a glimpse through them at the galaxy's center.
—Cybele Mayes-Osterman, USA TODAY, 8 Aug. 2024
See all Example Sentences for infrared
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'infrared.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near infrared
Cite this Entry
“Infrared.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/infrared. Accessed 19 Aug. 2024.
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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