Any of a class of highly unsaturated yellow to red pigments occurring in plants and animals

Wikipedia Word definitions in Wikipedia
Carotenoids , also called tetraterpenoids , are organic pigments that are found in the chloroplasts and chromoplasts of plants and some other photosynthetic organisms , including some bacteria and some fungi . Carotenoids can be produced from fats and other ...

Wiktionary Word definitions in Wiktionary
a. (context organic chemistry English) Of or relating to such a class of pigments. n. (context organic chemistry English) Any of a class of yellow to red plant pigments including the carotenes and xanthophylls.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1913, from German carotinoïde (1911), from carotin (see carotene ) + -oid .

WordNet Word definitions in WordNet
n. any of a class of highly unsaturated yellow to red pigments occurring in plants and animals