vitamin K

vitamin K
noun Etymology: from the initial letter of Danish & Swedish koagulation coagulation, Norwegian koagulasjon & German Koagulation Date: circa 1935 1. either of two naturally occurring fat-soluble vitamins C31H46O2 and C41H56O2 essential for the clotting of blood because of their role in the production of prothrombin — called also respectively vitamin K1, vitamin K2 2. any of several synthetic compounds closely related chemically to natural vitamins K1 and K2 and of similar biological activity

New Collegiate Dictionary. 2001.

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  • Vitamin K — has also been used as a slang term for ketamine, an unrelated anaesthetic. Vitamin K1 (phylloquinone). Both forms of the vitamin contain a functional naphthoquinone ring and an aliphatic side chain. Phylloquinone has a phytyl side chain …   Wikipedia

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  • Vitamin A — Systematic (IUPAC) name (2E,4E,6E,8E) 3,7 Dimethyl …   Wikipedia

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  • Vitamin-B — ist eine Vitamin Gruppe, in der acht wasserlösliche Vitamine zusammengefasst sind, die alle als Vorstufen für Koenzyme dienen. Die Nummerierung ist nicht durchgehend, weil sich bei vielen Substanzen, die ursprünglich als Vitamine galten, der… …   Deutsch Wikipedia

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  • vitamin K — n. a fat soluble vitamin, synthesized constantly by intestinal bacteria in mammals and occurring in certain green vegetables, fish meal, etc., that promotes blood clotting and is required for the synthesis of prothrombin by the liver: the two… …   Universalium

  • Vitamin A — is retinol. Carotene compounds (found, for example, in egg yolk, butter and cream) are gradually converted by the body to vitamin A (retinol). A form of vitamin A called retinal is responsible for transmitting light sensation in the retina of the …   Medical dictionary

  • Vitamin B1 — is thiamine. Vitamin B1 acts as a coenzyme in the metabolism of the body. Deficiency of thiamine leads to beriberi, a disease of the heart and nervous system. The word vitamin was coined in 1911 by the Warsaw born biochemist Casimir Funk (1884… …   Medical dictionary

  • Vitamin de — Beschreibung Deutschlernerzeitschrift Verlag NP PRESS.DE Erstausgabe 2002 Erscheinungsweise …   Deutsch Wikipedia

  • vitamin de — Beschreibung Zeitschrift für junge Deutschlerner Verlag Verein vitamin de , NP PRESS.DE Erstausgabe 2002 …   Deutsch Wikipedia

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