from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An orange-yellow to red crystalline pigment, C40H56, found in animal tissue and certain plants, such as carrots and squash. It exists in several isomeric forms and is converted to vitamin A in the liver.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A class of tetraterpene plant pigments; they vary in colour from yellow, through orange to red, this colour originating in a chain of alternating single and double bonds.
- n. Specifically, a number of isomers of tetraterpene hydrocarbons, C40H56, (especially beta-carotene), present in carrots etc, which are converted into vitamin A in the liver.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver
- n. yellow or orange-red fat-soluble pigments in plants
German Karotin, from Latin carōta, carrot; see carrot.(American Heritage® Dictionary of the English Language, Fourth Edition)
From car(r)ot + -ene. (Wiktionary)