vitamin K1

American  

noun

1. a yellowish, oily, viscous liquid, C 31 H 46 O 2 , occurring in leafy vegetables, rice, bran, hog liver, etc., or obtained especially from alfalfa or putrefied sardine meat, or synthesized, that promotes blood clotting by increasing the prothrombin content of the blood.

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vitamin K1 British  

noun

1. another name for phylloquinone

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vitamin K1 Scientific  

1. The major dietary form of vitamin K that is synthesized in plants and found primarily in green, leafy vegetables such as alfalfa and in vegetable oils. It can be made synthetically and is given orally to treat prothrombin deficiency that results from heparin and other anticoagulant drugs. Also called phylloquinone. Chemical formula: C ₃₁ H ₄₆ O ₂ .

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Etymology

Origin of vitamin K1

First recorded in 1930–35