ca·​rot·​en·​oid | \kə-ˈrä-tə-ˌnȯid \
variants: or less commonly carotinoid

Definition of carotenoid 

: 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

Keep scrolling for more

Other Words from carotenoid

carotenoid adjective

Examples of carotenoid in a Sentence

Recent Examples on the Web

Spinach: Dark leafy greens such as spinach, kale, romaine lettuce, leaf lettuce, mustard greens, collard greens, chicory and Swiss chard have fiber, folate and carotenoids, which have antioxidants. Allison Horton, miamiherald, "Want to reduce your odds of getting cancer? Stay active, lose weight and eat healthy," 25 May 2018 Corn happens to be an excellent source of the carotenoids lutein and zeaxanthin, which research finds are critical to maintaining eye health. Samantha Cassetty, NBC News, "10 seriously filling salads you'll want to eat all summer," 6 June 2017 These antioxidants, also known as carotenoids, help to fight off oxidative stress in your body and may protect against chronic disease. Alex Van Buren,, "Why Basil Is So Good for You—Plus 14 Ways to Use More of It All Summer Long," 14 May 2018 For instance, orange sweet potatoes have the highest levels of beta-carotene, a carotenoid with antioxidant activity. Caroline Walder, Good Housekeeping, "Sweet Potatoes Are Officially One of the Best Carbs You Can Eat," 5 Mar. 2018 Promote eye, skin, and bone health: Phytochemicals like carotenoids and phytosterols reduce oxidative and inflammatory stress. Caroline Walder, Good Housekeeping, "Why You Should Eat Avocado Every Single Day," 26 Feb. 2018 The device uses resonance Raman spectroscopy (RRS)—a technique that analyzes light reflected off an illuminated spot and looks at its vibrations to detect the levels of carotenoids (organic pigments that come from plants) in a person’s body. Lizette Borreli, Newsweek, "Get Your Palm Read - And Find Out If You're Eating Right," 29 Nov. 2014 Plus, the polyphenols, flavonoids, and carotenoids in black carrots may substantially defend against chronic disease. Good Housekeeping, "Why You Should Eat Carrots Every Single Day," 2 Mar. 2018 Red northern cardinals that turn yellow may have a genetic mutation that prevents the bird from producing red feather pigments from its diet of wild fruits rich in carotenoids. Gary Clark, Houston Chronicle, "Genetic mutation, diet could cause yellow cardinal's rare plumage," 28 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'carotenoid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of carotenoid

1911, in the meaning defined above

Keep scrolling for more

Learn More about carotenoid

Share carotenoid

Dictionary Entries near carotenoid








Statistics for carotenoid

Look-up Popularity

Time Traveler for carotenoid

The first known use of carotenoid was in 1911

See more words from the same year

Keep scrolling for more

More Definitions for carotenoid


variants: also carotinoid \ kə-​ˈrät-​ᵊn-​ˌȯid \

Medical Definition of carotenoid 

: 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

Other Words from carotenoid

carotenoid adjective

More from Merriam-Webster on carotenoid

See words that rhyme with carotenoid Encyclopedia article about carotenoid

Comments on carotenoid

What made you want to look up carotenoid? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!