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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.


(Biochemistry) a substance, such as carotene, that is converted into a vitamin in animal tissues


(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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.provitamin - vitamin precursor; a substance that is converted into a vitamin in animal tissues
hydrocarbon - an organic compound containing only carbon and hydrogen
carotene, carotin, provitamin A - an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver
References in periodicals archive ?
5%; provitamins, vitamins and their derivatives - 2.
The study supports the recommendation of a safe limit to the amount of vitamin A intake for women and confirms that toxicity is not a concern with provitamins such as beta-carotene.
The other colors are not provitamins but rather potent antioxidant phytochemicals that are in foods associated with reduction in certain cardiovascular diseases and forms of cancer.
The carotenoids - members of the family of orange, yellow and red plant pigments - have no Recommended Daily Allowance (RDA), although they are established as precursors or provitamins for vitamin A.
com/research/bp8qt3/vitamins_and) has announced the addition of the "Vitamins and Provitamins - China" report to their offering.
com/research/xf3k63/vitamins_and_provi) has announced the addition of the "Vitamins and Provitamins - Americas" report to their offering.