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单词 calciferol
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cal•cif•er•ol  (kal sif′ə rôl′, -rol′),USA pronunciation n. [Biochem.]
  1. Biochemistry, Nutritiona fat-soluble, crystalline, unsaturated alcohol, C28H43OH, occurring in milk, fish-liver oils, etc., produced by ultraviolet irradiation of ergosterol, and used as a dietary supplement, as in fortified milk. Also called vitamin D 2.
  • calcif(erous) + (ergost)erol 1930–35

Collins Concise English Dictionary © HarperCollins Publishers::
calciferol /kælˈsɪfərɒl/ n
  1. a fat-soluble steroid, found esp in fish-liver oils, produced by the action of ultraviolet radiation on ergosterol. It increases the absorption of calcium from the intestine and is used in the treatment of rickets. Formula: C28H43OH
    Also: vitamin D2
Etymology: 20th Century: from calcif( erous + ergost) erol
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