menaquinone
Pronunciation: /ˌmɛnəˈkwɪnəʊn/
Definition of menaquinone
noun
- one of the K vitamins, a compound produced by bacteria in the large intestine and essential for the blood-clotting process. It is an isoprenoid derivative of menadione. Also called vitamin K2.
Origin:
1940s: from the chemical name me(thyl)-na(phtho)quinone