noun Etymology: from the initial letter of Danish & Swedish koagulation coagulation, Norwegian koagulasjon & German Koagulation Date: circa 1935 either of two naturally occurring fat-soluble vitamins C 31 H 46 O 2 and C 41 H 56 O 2 essential for the clotting of blood because of their role in the production of prothrombin, any of several synthetic compounds closely related chemically to natural vitamins K 1 and K 2 and of similar biological activity
VITAMIN K
Meaning of VITAMIN K in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012