beta carotene

noun Biochemistry.
  1. 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

betacarotene

noun
  1. 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
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