vitamin D

noun

Definition of vitamin D

  1. :  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: such asa or vitamin D2 \-ˈdē-ˈtü\ :  calciferolb or vitamin D3 \-ˈdē-ˈthrē\ :  cholecalciferol

Circa 1921

First Known Use of vitamin d

circa 1921


Medical Dictionary

vitamin D

noun

Medical Definition of vitamin D

  1. :  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: asa:  calciferolb:  cholecalciferol—called also sunshine vitamin


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