carotenoid

[kuh-rot-n-oid] Biochemistry.
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:
1910–15; carotene + -oid

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Collins
World English Dictionary
carotenoid or carotinoid (kəˈrɒtɪˌnɔɪd)
 
n
1.  any of a group of red or yellow pigments, including carotenes, found in plants and certain animal tissues
 
adj
2.  of or resembling carotene or a carotenoid
 
carotinoid or carotinoid
 
n
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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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American Heritage
Science Dictionary
carotenoid   (kə-rŏt'n-oid')  Pronunciation Key 
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 Britannica
Encyclopedia

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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Example sentences
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.
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