viosterol
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vi·os·ter·ol
(vī-ŏs′tə-rôl′, -rōl′)n.
A preparation of vitamin D2 obtained from ultraviolet irradiation of ergosterol, formerly used medicinally.
[(ultra)vio(let) + (ergo)sterol.]
viosterol
(vaɪˈɒstəˌrɒl)n
(Pharmacology) vitamin D2, a fat soluble vitamin activated by ultraviolet radiation and which prevents rickets
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Noun | 1. | ![]() ergosterol - a plant sterol that is converted into vitamin D by ultraviolet radiation fat-soluble vitamin - any vitamin that is soluble in fats |