carotenoid

or ca·rot·i·noid

[ kuh-rot-n-oid ]

noun

1. any of a group of red and yellow pigments, chemically similar to carotene, contained in animal fat and some plants.

adjective

1. similar to carotene.
2. pertaining to carotenoids.

carotenoid

/ kəˈrɒtɪˌnɔɪd /

noun

1. any of a group of red or yellow pigments, including carotenes, found in plants and certain animal tissues

adjective

1. of or resembling carotene or a carotenoid

carotenoid

/ kə-rŏt′n-oid′ /

1. 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.
2. See more at photosynthesis

Word History and Origins

Origin of carotenoid¹

First recorded in 1910–15; carotene + -oid

Example Sentences

This could involve altering the crops' genomes so that they express pigments that are already produced by many plants, for example, anthocyanins, which make blueberries blue, or carotenoids, which make carrots orange.

From Science Daily

This reaction is a sign of higher and diverse carotenoid content ratio, meaning the proposed method could help turn E. gracilis into an even more nutritious food source.

From Science Daily

These are organic compounds that include the well-known "carotenoids," which are responsible for producing the vibrant red, orange and yellow colours seen in birds' feathers, carrots and egg yolks, for instance.

From Science Daily

Hall then wondered what would happen if he combined the genetic changes needed to make PDC and a carotenoid in the same microbe.

From Science Daily

Carrots, especially orange carrots, contain high quantities of carotenoids, which can help reduce the risk of diseases like eye disease.

From Science Daily