vitamin k2

noun

1. a light-yellow, crystalline solid, C41H56O2, having properties similar to those of vitamin K1.

noun

1. another name for menaquinone

n.

1. Any of various yellowish crystalline compounds isolated from putrefied fish meal or from various intestinal bacteria and used to stop hemorrhaging.menaquinone

1. A form of vitamin K that is synthesized by bacteria in the intestine and is also found in fish and other foods. Also called menaquinone. Chemical formula: C41H56O2.