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Definition of: calciferol
(kal·sif′ər·ōl, -ol) noun Biochem.
The anti-rachitic vitamin D2, a white, crystalline, fat-soluble, accessory food factor, C28H44O, formed by the ultraviolet irradiation of ergosterol: found in fish oils, milk, eggs, etc. [<CALCIFER(OUS) + (ERGOSTER)OL]
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