Medical Dictionary

vitamin D

noun

Medical Definition of VITAMIN D

:  any or all of several fat-soluble vitamins chemically related to steroids, essential for normal bone and tooth structure, and found especially in fish-liver oils, egg yolk, and milk or produced by activation (as by ultraviolet irradiation) of sterols: as a :  calciferol b :  cholecalciferol—called also sunshine vitamin
May 25, 2015
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a noisy boisterous band or parade
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