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[kuh-rot-n-oid] /kəˈrɒt nˌɔɪd/ Biochemistry
any of a group of red and yellow pigments, chemically similar to carotene, contained in animal fat and some plants.
similar to carotene.
pertaining to carotenoids.
Origin of carotenoid
1910-15; carotene + -oid Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for carotenoid
  • The more carotenoid-containing food a flamingo eats before molting and growing new feathers, the brighter its feathers will be.
  • Millions of years back, they apparently grabbed the genes for making carotenoids directly from a carotenoid-producing fungus.
  • Basically, the condition arises from eating too many carotenoid bearing foods.
British Dictionary definitions for carotenoid


any of a group of red or yellow pigments, including carotenes, found in plants and certain animal tissues
of or resembling carotene or a carotenoid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for carotenoid

1913, from German carotinoïde (1911), from carotin (see carotene) + -oid.

Online Etymology Dictionary, © 2010 Douglas Harper
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carotenoid in Medicine

carotenoid ca·rot·e·noid (kə-rŏt'n-oid')
Any of a class of yellow to red pigments, including the carotenes and the xanthophylls. adj.
Of, relating to, or characterizing such a pigment.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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carotenoid in Science
Any of a class of yellow to red pigments found especially in plants, algae, and photosynthetic bacteria. Carotenoids generally consist of conjoined units of the hydrocarbon isoprene, with alternating single and double bonds. The carotenoids absorb light energy of certain frequencies and transfer it to chlorophyll for use in photosynthesis. They also act as antioxidants for chlorophyll, protecting it from damage by oxidation in the presence of sunlight. Carotenoids are nutritionally important for many animals, giving flamingoes their color, for example, and also have antioxidant properties. There are many types of carotenoids, including carotenes and xanthophylls. See more at photosynthesis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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