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vitamin D
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: such asa or vitamin D2 play \-ˈdē-ˈtü\ : calciferolb or vitamin D3 play \-ˈdē-ˈthrē\ : cholecalciferol
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First Known Use of vitamin d
circa 1921
Medical Dictionary
vitamin D
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: asa: calciferolb: cholecalciferol—called also sunshine vitamin
Learn More about vitamin d
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Britannica.com: Encyclopedia article about vitamin D
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