vitamin K Hear it!

vitamin K definition

vitamin K

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 naturally occurring varieties are vitamin K, CHO, found chiefly in alfalfa leaves, and vitamin K, CHO, found chiefly in fish meal: vitamin K ( menadione) and vitamin K are prepared synthetically

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.