vitamin D2

noun

1. calciferol.

vitamin D2

noun

1. See calciferol
   another name for calciferol

vitamin D2

1. A white crystalline sterol produced by ultraviolet irradiation of ergosterol and also occurring naturally in fungi and some fish oils. Vitamin D 2 is the form of vitamin D generally used as a dietary supplement. Also called calciferol, ergocalciferol. Chemical formula: C 28 H 44 O.