the most abundant of various isomers of carotene, C40H56, that can be converted by the body to vitamin A.
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British Dictionary definitions for betacarotene
/ (ˌbiːtəˈkærəˌtiːn) /
the most important form of the plant pigment carotene, which occurs in milk, vegetables, and other foods and, when eaten by man and animals, is converted in the body to vitamin A
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012