vitamin K1

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.

vitamin K1

noun

1. another name for phylloquinone

vitamin K1

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 .

Word History and Origins

Origin of vitamin K1¹

First recorded in 1930–35

Example Sentences

But, says Dehghan, dairy also contains nutrients that are good for us, including specific amino acids, unsaturated fats, vitamin K1 and K2, calcium, magnesium and potassium.

From The Guardian

With vitamin K1, no decreased risk was seen until consumption of the vitamin was relatively high.

From Reuters

In the current study, vitamin K2 -- which study participants most frequently got through cheese -- was linked to the odds of developing or dying from cancer, whereas vitamin K1 was not.

From Reuters

Similar to the findings with vitamin K2, the one-quarter of men and women who got the most vitamin K1 were 19 percent less likely to develop diabetes than the quarter with the lowest intake.

From Reuters