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carotenoid

[kuh-rot-n-oid] /kəˈrɒt nˌɔɪd/
noun
1.
any of a group of red and yellow pigments, chemically similar to carotene, contained in animal fat and some plants.
adjective
2.
similar to carotene.
3.
pertaining to carotenoids.
Also, carotinoid.
Origin
1910-1915
1910-15; carotene + -oid
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for carotenoids
  • The flamingo's bright pink coloration comes from its diet-animals can't synthesize the carotenoids that color these feathers.
  • In short, carotenoids appear to compensate for the effect of testosterone by keeping the immune system strong.
  • To best absorb these carotenoids, you actually need dietary fat.
  • The green aphids have carotenoids that are yellow in colour.
  • Plant carotenoids are the primary dietary source of vitamin a worldwide.
  • carotenoids containing some oxygen are known as xanthophylls.
British Dictionary definitions for carotenoids

carotenoid

/kəˈrɒtɪˌnɔɪd/
noun
1.
any of a group of red or yellow pigments, including carotenes, found in plants and certain animal tissues
adjective
2.
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 carotenoids

carotenoid

n.

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

Online Etymology Dictionary, © 2010 Douglas Harper
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carotenoids in Medicine

carotenoid ca·rot·e·noid (kə-rŏt'n-oid')
n.
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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carotenoids in Science
carotenoid
  (kə-rŏt'n-oid')   
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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Encyclopedia Article for carotenoids

carotenoid

any of a group of nonnitrogenous yellow, orange, or red pigments (biochromes) that are almost universally distributed in living things. There are two major types: the hydrocarbon class, or carotenes, and the oxygenated (alcoholic) class, or xanthophylls. Synthesized by bacteria, fungi, lower algae, and green plants, carotenoids are most conspicuous in the petals, pollen, and fruit (e.g., carrots, sweet potatoes, tomatoes, and citrus fruits) of the flowering plants. They can also be seen in the autumn foliage of deciduous trees and shrubs. In the leaves of green plants, carotenoids serve as accessory pigments in photosynthesis, trapping solar energy and passing it to chlorophyll, the primary photosynthetic pigment. All animals and protozoans also contain carotenoids, which they obtain by ingestion. Vitamin A, for example, is one of the substances that animals obtain from the ingestion of carotene. Carotenoids also play a major role in the biological coloration of animals

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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