a yellowish, oily, viscous liquid, C31H46O2, occurring in leafy vegetables, rice, bran, hog liver, etc., or obtained especially from alfalfa or putrefied sardine meat, or synthesized, that promotes blood clotting by increasing the prothrombin content of the blood.
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Origin of vitamin K1
First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for vitamin k1
another name for phylloquinone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for vitamin k1
A yellow viscous oil found in leafy green vegetables or made synthetically, used by the body to form prothrombin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for vitamin k1
The major dietary form of vitamin K that is synthesized in plants and found primarily in green, leafy vegetables such as alfalfa and in vegetable oils. It can be made synthetically and is given orally to treat prothrombin deficiency that results from heparin and other anticoagulant drugs. Also called phylloquinone. Chemical formula: C31H46O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.