Definition of provitamin in English:
 provitamin
noun ˈprəʊvɪtəmɪnproʊˈvaɪdəmən
Biochemistry A substance which is converted into a vitamin within an organism.
 Example sentencesExamples
-  Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties.
 -  It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables.
 -  Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A.
 -  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.
 -  However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene.
 
  Definition of provitamin in US English:
 provitamin
nounproʊˈvaɪdəmənprōˈvīdəmən
Biochemistry A substance which is converted into a vitamin within an organism.
 Example sentencesExamples
-  However, the Inuit population infrequently consumes vegetables in general, including certain yellow and green ones that contain provitamin A carotene.
 -  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.
 -  Beta carotene, a provitamin found in plants and their pigments, is a benign source of vitamin A and is an antioxidant with possible anticarcinogenic properties.
 -  Sweet potatoes are also an excellent source of provitamin A, which the body converts into vitamin A.
 -  It is a fat-soluble substance that is divided into retinol and provitamin A. Retinol is the active form of vitamin A usually found in animal products, while provitamin A is found in fruits and vegetables.