Found 2 items, similar to vitamin K.
English → English (WordNet) Definition: vitamin K vitamin K n : a fat-soluble vitamin that helps in the clotting of blood [syn: naphthoquinone, antihemorrhagic factor]
English → English (gcide) Definition: vitamin K vitamin K \vitamin K\ n. (1929) [from G. Koagulationsvitamin.] either of two fat-soluble vitamins (vitamin K1 or vitamin K2) that help clot blood by participating in the fromation of prothrombin. Syn: naphthoquinone. [WordNet 1.5 +PJC]