(5Z,7E)-(3S)-9,10-Secocholesta-5,7,10(19)-trien-3-ol; formed by breakage of the 9,10 bond in 7-dehydrocholesterol by ultraviolet irradiation, yielding a double bond between C-10 and C-19; probably the vitamin D of animal origin found in the skin, fur, and feathers of animals and birds exposed to sunlight, and also in butter, brain, fish oils, and egg yolk. SYN: vitamin D3. SYN: calciol.

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cho·le·cal·cif·er·ol .kō-lə-(.)kal-'sif-ə-.rȯl, -.rōl n a sterol C27H43OH that is a natural form of vitamin D found esp. in fish, egg yolks, and fish-liver oils and is formed in the skin on exposure to sunlight or ultraviolet rays called also vitamin D, vitamin D3

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cho·le·cal·ci·fer·ol (ko″lə-kal-sifґər-ol) a hormone synthesized in the skin on irradiation of 7-dehydrocholesterol or obtained as a vitamin from dietary sources; it is activated when metabolized to 1,25-dihydroxycholecalciferol. See table. See also ergocalciferol. Called also vitamin D3>. [USP] a preparation of this compound, derived from animal tissues and used in the prophylaxis and treatment of vitamin D deficiencies due to low intake, high requirement, or impaired absorption of the vitamin. It is also used in the treatment of hypocalcemic tetany and hypoparathyroidism.

Medical dictionary. 2011.

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Look at other dictionaries:

  • Cholecalciferol — Cholecalciferol …   Wikipedia

  • Cholecalciferol — Cholécalciférol Cholécalciférol Structure chimique du cholécalciférol Général Synonymes vitamine D3 …   Wikipédia en Français

  • Cholécalciférol — Structure chimique du cholécalciférol Général Nom IUPAC (3Z) 3 [(2E) 2 (1 (6 méthylheptan 2 yl) 7a méth …   Wikipédia en Français

  • cholécalciférol — ● cholécalciférol nom masculin Vitamine D présente dans l alimentation mais surtout synthétisée dans la peau à partir du cholestérol sous l action du soleil. (Sa carence provoque le rachitisme chez l enfant et l ostéomalacie chez l adulte.) …   Encyclopédie Universelle

  • Cholecalciferol — ⇒ Calciferol …   Deutsch wörterbuch der biologie

  • cholecalciferol — ► NOUN Biochemistry ▪ a form of vitamin D (vitamin D3), produced naturally in the skin by the action of sunlight …   English terms dictionary

  • cholecalciferol — [kä΄lə kal sif′ər ôl΄, kä΄lə kal sif′ərōl΄, kō΄ləkal sif′ər ôl′, kō΄ləkal sif′ər ōl΄] n. a white, crystalline sterol, C27H43OH, found esp. in fish liver oils or produced in the skin by irradiation with sunlight; vitamin D3: the most common form… …   English World dictionary

  • Cholecalciferol — Strukturformel Allgemeines Trivialname Vitamin D3 …   Deutsch Wikipedia

  • cholecalciferol — A nutrient that helps the body use calcium and phosphorus and make strong bones and teeth. It is found in fatty fish, eggs, and dairy products. The skin can also make cholecalciferol when exposed to sunshine. Not getting enough cholecalciferol… …   English dictionary of cancer terms

  • cholecalciferol — vitamin D vitamin D n. any of several chemically related fat soluble vitamins that prevent rickets. It is found in fish liver oils, egg yolks and milk. Component vitamin D2 is also called {calciferol}, and vitamin D3 is called {cholecalciferol}.… …   The Collaborative International Dictionary of English

  • Cholecalciferol — Cho|le|cal|ci|fe|rol [zu ↑ Cholesterin] ↑ Calciferol. * * * Cholecalciferol   [ç ] das, s, Vitamin D3, Calciferole …   Universal-Lexikon

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