provitamin /pro·vi·ta·min/ (-vi´tah-min) a precursor of a vitamin.
provitamin
provitamin (prōvī´t
min),
provitamin A usually β-carotene, sometimes including any of the provitamin A carotenoids.
provitamin D2 ergosterol.
provitamin D3 7-dehydrocholesterol.
pro·vi·ta·min (pr -v  t -m n)n. A vitamin precursor that is converted to its active form through normal metabolic processes. |
provitamin
[prōvī′təmin]
a precursor of a vitamin; a substance found in certain foods that in the body may be converted into a vitamin. Also called previtamin.
provitamin (prōvī´t
min),n a substance in food that may be transformed into a vitamin within the body; a potential vitamin.
provitamin
a substance, e.g. ergosterol, from which the animal organism can form a vitamin.
provitamin A
see carotene.
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