vitamin K

British

noun

any of the fat-soluble vitamins, including phylloquinone and the menaquinones, which are essential for the normal clotting of blood

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

vitamin K Scientific

Any of a group of fat-soluble vitamins that are involved in the formation of prothrombin and other clotting factors in the liver and are essential for normal clotting of the blood. (The K is derived from the German word koagulation.) Vitamin K is also involved in bone formation and repair. Two forms occur naturally: vitamin K ₁, which is synthesized by plants, and vitamin K ₂, which is mainly synthesized by intestinal bacteria. The other forms are synthetic substances with similar chemical structures.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

She warns that if you don't regularly consume these types of foods, you're probably also short of other essential nutrients like vitamin C, vitamin K, fibre and prebiotics too.

From BBC

The team also identified a distinct mechanism through which vitamin K promotes neuronal differentiation.

From Science Daily

In that same cup, you get a huge hit towards your recommended daily amount of folate, vitamin A, manganese, vitamin K, copper, magnesium, calcium, zinc and iron.

From Salon

Ms Skinner told the inquest that vitamin K administration had been a "routine part of newborn care for many years".

From BBC

One hypothesis is that the vitamin K plus potassium and magnesium may help with bone remineralization.

From Seattle Times

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023