infrared

[in-fruh-red] / ˌɪn frəˈrɛd /

NOUN

red

Synonyms

STRONGEST

cardinal coral crimson flaming glowing maroon rose wine

STRONG

blooming blush brick burgundy carmine cerise cherry chestnut claret copper dahlia fuchsia garnet geranium magenta pink puce ruby russet rust salmon sanguine scarlet titian vermilion

WEAK

bloodshot florid flushed healthy inflamed roseate rosy rubicund ruddy rufescent

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In this process, three infrared photons combine into one photon with a higher frequency, effectively converting infrared light into visible blue light.

From Science Daily • Apr. 5, 2026

Embarking on expeditions in vast and sometimes dangerous environments, Bigfoot hunters set out with drones, infrared cameras, audio recorders and materials to cast footprints.

From BBC • Apr. 3, 2026

This ranges from shapes captured on trails or infrared cameras to a howl or witness testimony, allowing Bigfooters to hypothesise what that means about the beast's "anatomy, behaviour, sociality and levels of intelligence".

From BBC • Apr. 3, 2026

These infrared lasers are commonly used in data centers and sensing technologies because they are efficient and capable of operating at very high speeds.

From Science Daily • Apr. 2, 2026

She hit the key for an infrared scan.

From "The Mark of Athena" by Rick Riordan

Vocabulary lists containing infrared

Physical Science - Energy - Middle School

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Physics - Middle School

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Physics - High School

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