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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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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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beta-carotene

[bā′tə-kărə-tēn′]
  1. A phytochemical that is an isomer of carotene found in dark green and yellow fruits and vegetables and that is converted to vitamin A, primarily in the liver. See more at carotene.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.