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dehydrocholesterol

Syllabification: (de·hy·dro·cho·les·ter·ol)

Pronunciation: /dēˌhīdrōkəˈləstəˌrôl/

Definition of dehydrocholesterol

noun

Biochemistry

a derivative of cholesterol present in the skin. It can be converted to cholecalciferol (vitamin D₃) by the action of ultraviolet radiation.
- Chemical formula: C₂₇H₄₄O. The particular isomer involved in vitamin D₃ formation is 7-dehydrocholesterol