noun \kal-ˈsif-ə-ˌrl, -ˌrōl\

Definition of CALCIFEROL

: an alcohol C28H43OH usually prepared by irradiation of ergosterol and used as a dietary supplement in nutrition and medicinally especially in the control of rickets—called also ergocalciferol, viosterol, vitamin D, vitamin D2; see drisdol

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