carotenoid

noun

ca·​rot·​en·​oid kə-ˈrä-tə-ˌnȯid How to pronounce carotenoid (audio)
variants or less commonly carotinoid
: any of various usually yellow to red pigments (such as carotenes) found widely in plants and animals and characterized chemically by a long aliphatic polyene chain composed of eight isoprene units
carotenoid adjective

Examples of carotenoid in a Sentence

Recent Examples on the Web
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Your Body Needs Fat to Absorb Certain Nutrients Tomatoes are rich in carotenoids, especially lycopene and beta-carotene. Kathleen Ferraro, Verywell Health, 17 Feb. 2026 Rich in antioxidant compounds, including carotenoids, tocopherols, and phenolics, lupini beans can help reduce inflammation and protect against cell damage. Randi Gollin, Martha Stewart, 15 Feb. 2026 Specifically, the healthy, unsaturated fats in avocados may boost the body's ability to absorb carotenoids, a type of antioxidant also found in avocados. Carrie Madormo, Health, 10 Feb. 2026 Citrus also contains flavonoids and carotenoids, compounds that have antioxidant properties and may help protect against infections. Gretchen McKay, Twin Cities, 30 Jan. 2026 See All Example Sentences for carotenoid

Word History

First Known Use

1911, in the meaning defined above

Time Traveler
The first known use of carotenoid was in 1911

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Cite this Entry

“Carotenoid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carotenoid. Accessed 23 Feb. 2026.

Medical Definition

carotenoid

noun
ca·​rot·​en·​oid
variants also carotinoid
: any of various usually yellow to red pigments (as carotenes) found widely in plants and animals and characterized chemically by a long aliphatic polyene chain composed of eight isoprene units
carotenoid adjective

More from Merriam-Webster on carotenoid

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