provitamin(redirected from provitamin D2)
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A vitamin precursor that the body converts to its active form through normal metabolic processes. Carotene, for example, is a provitamin of vitamin A.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Biochemistry) a substance, such as carotene, that is converted into a vitamin in animal tissues
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
pro•vi•ta•min(proʊˈvaɪ tə mɪn; Brit. also proʊˈvɪt ə mɪn)
a substance that an organism can transform into a vitamin, as carotene, which is converted to vitamin A in the liver.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||provitamin - vitamin precursor; a substance that is converted into a vitamin in animal tissues|
hydrocarbon - an organic compound containing only carbon and hydrogen
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