(ˈ)prō+ noun
Etymology: pro- (I) + vitamin
: a precursor of a vitamin that can be converted into a vitamin in the organism
ergosterol is a provitamin of vitamin D 2
(ˈ)prō+ noun
Etymology: pro- (I) + vitamin
: a precursor of a vitamin that can be converted into a vitamin in the organism
ergosterol is a provitamin of vitamin D 2
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012