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vitamin D1

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noun
a mixture of lumisterol and calciferol, obtained by ultraviolet irradiation of ergosterol.
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How to use vitamin D1 in a sentence

British Dictionary definitions for vitamin D1

vitamin D1

noun
the first isolated form of vitamin D, consisting of calciferol and its precursor, lumisterol
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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