menadione
[ men-uh-dahy-ohn ]
/ ˌmɛn əˈdaɪ oʊn /
noun Pharmacology.
a synthetic yellow crystalline powder, C11H8O2, insoluble in water, used as a vitamin K supplement.
Also called
vitamin K3.
Origin of menadione
Words nearby menadione
men-children,
menace,
menacme,
menad,
menadiol diacetate,
menadione,
menado,
menagerie,
menai strait,
menam,
menander
Definition for vitamin k (2 of 4)
vitamin K1
noun
a yellowish, oily, viscous liquid, C31H46O2, 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.
Also called
phylloquinone,
phytonadione.
Origin of vitamin K1
First recorded in 1930–35
Definition for vitamin k (3 of 4)
vitamin K2
noun
a light-yellow, crystalline solid, C41H56O2, having properties similar to those of vitamin K1.
Definition for vitamin k (4 of 4)
British Dictionary definitions for vitamin k (1 of 5)
vitamin K
noun plural K vitamins
any of the fat-soluble vitamins, including phylloquinone and the menaquinones, which are essential for the normal clotting of blood
British Dictionary definitions for vitamin k (2 of 5)
British Dictionary definitions for vitamin k (3 of 5)
British Dictionary definitions for vitamin k (4 of 5)
British Dictionary definitions for vitamin k (5 of 5)
menadione
/ (ˌmɛnəˈdaɪəʊn) /
noun
a yellow crystalline compound used in fungicides and as an additive to animal feeds. Formula: C 11 H 8 O 2
Also: vitamin K 3
Word Origin for menadione
C20: from
me (
thyl) +
na (
phtha) +
di-
1 +
-one
Medical definitions for vitamin k (1 of 4)
vitamin K
n.
Any of several fat-soluble compounds that are found in alfalfa, hog liver, fish meal, and vegetable oils and are essential for the production of normal amounts of prothrombin.
antihemorrhagic factor
Medical definitions for vitamin k (2 of 4)
menadione
[ mĕn′ə-dī′ōn′ ]
n.
A synthetic vitamin K derivative occurring as a yellow crystalline powder and used as a vitamin K supplement.
Medical definitions for vitamin k (3 of 4)
vitamin K1
n.
A yellow viscous oil found in leafy green vegetables or made synthetically, used by the body to form prothrombin.
Medical definitions for vitamin k (4 of 4)
vitamin K2
n.
Any of various yellowish crystalline compounds isolated from putrefied fish meal or from various intestinal bacteria and used to stop hemorrhaging.
menaquinone
Scientific definitions for vitamin k (1 of 3)
vitamin K
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 K1, which is synthesized by plants, and vitamin K2, which is mainly synthesized by intestinal bacteria. The other forms are synthetic substances with similar chemical structures.
Scientific definitions for vitamin k (2 of 3)
vitamin K1
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: C31H46O2.
Scientific definitions for vitamin k (3 of 3)
vitamin K2
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.