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carotene (n.)

orange-colored hydrocarbon found in carrots and other plants, 1861, from German carotin, coined 1831 by German chemist H.W.F. Wackenroder (1789-1854) from Latin carota "carrot" (see carrot) + German form of chemical suffix -ine (2), denoting a hydrocarbon.

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Definitions of carotene from WordNet

carotene (n.)
an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver;
Synonyms: provitamin A / carotin
carotene (n.)
yellow or orange-red fat-soluble pigments in plants;
From wordnet.princeton.edu