A zoosterol in skin and other animal tissues that upon activation by ultraviolet light becomes antirachitic and is then referred to as cholecalciferol (vitamin D3). SYN: provitamin D3.

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7-de·hy·dro·cho·les·ter·ol 'sev-ən-(.)dē-.hī-drō-kə-'les-tə-.rōl, -.rȯl n a crystalline steroid alcohol C27H43OH that occurs (as in the skin) chiefly in higher animals and humans and that yields vitamin D3 on irradiation with ultraviolet light

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7-de·hy·dro·cho·les·ter·ol (de-hi″dro-kə-lesґtər-ol) a sterol found in the skin; it is the provitamin of cholecalciferol, being converted to that compound upon irradiation by ultraviolet radiation.

Medical dictionary. 2011.

Look at other dictionaries:

  • dehydrocholesterol — dē|hīdrō+ noun Etymology: dehydr + cholesterol : a crystalline steroid alcohol C27H43OH that occurs chiefly in higher animals and man (as in the skin), that is made synthetically from cholesterol, and that yields vitamin D3 on irradiation with… …   Useful english dictionary

  • dehydrocholesterol — noun A sterol, found in the skin, that, on exposure to light, is converted into vitamin D …   Wiktionary

  • dehydrocholesterol — [di:ˌhʌɪdrə(ʊ)kə lɛstərɒl] noun Biochemistry a compound present in the skin, which is converted to cholecalciferol (vitamin D3) by ultraviolet light. Origin 1930s: from dehydro that has lost hydrogen + cholesterol …   English new terms dictionary

  • dehydrocholesterol — de·hy·dro·cholesterol …   English syllables

  • 7-Dehydrocholesterol reductase — Identifiers Symbols DHCR7; SLOS External IDs OMIM …   Wikipedia

  • 7-Dehydrocholesterol — Chembox new ImageFile = 7 Dehydrochlolesterol.png ImageSize = IUPACName = OtherNames = Section1 = Chembox Identifiers CASNo = 434 16 2 PubChem = 172 SMILES = MeSHName = 7 dehydrocholesterol Section2 = Chembox Properties Formula = C27H44O… …   Wikipedia

  • 7-Dehydrocholesterol — Strukturformel Allgemeines Name 7 Dehydrocholesterol Andere Namen …   Deutsch Wikipedia

  • 24-dehydrocholesterol reductase — Identifiers Symbols DHCR24; DCE; KIAA0018; Nbla03646; SELADIN1; seladin 1 External IDs …   Wikipedia

  • 7-Dehydrocholesterol-Reduktase — Masse/Länge Primärstruktur 475 Aminosäuren …   Deutsch Wikipedia

  • 24-dehydrocholesterol — SYN: desmosterol. * * * 24 dehydrocholesterol .twen tē fōr , .twən , fȯr n DESMOSTEROL …   Medical dictionary

  • 7-dehydrocholesterol — noun see dehydrocholesterol …   Useful english dictionary

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