NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,389 terms related to cancer and medicine.
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- vitamin K
- listen (VY-tuh-min ...)
- A nutrient that the body needs in small amounts to function and stay healthy. Vitamin K helps to form blood clots (a mass that forms when blood platelets, proteins, and cells stick together) and maintain strong bones. It is fat-soluble (can dissolve in fats and oils) and is found in green leafy vegetables, broccoli, liver, and vegetable oils. Vitamin K is also made by bacteria that live in the large intestine. Not enough vitamin K can lead to bleeding and bruising. It is a type of phylloquinone.