follow Dictionary.com

Is Tuesday named for a one-handed god?

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.
Also called phylloquinone, phytonadione.
Origin
1930-1935
1930-35

vitamin K2

noun
1.
a light-yellow, crystalline solid, C 41 H 56 O 2 , having properties similar to those of vitamin K 1 .

vitamin K3

noun
1.

menadione

[men-uh-dahy-ohn] /ˌmɛn əˈdaɪ oʊn/
noun, Pharmacology
1.
a synthetic yellow crystalline powder, C 1 1 H 8 O 2 , insoluble in water, used as a vitamin K supplement.
Also called vitamin K3.
Origin
1940-45; me(thyl) + na(phthalene) + di-1 + -one
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for vitamin-k

menadione

/ˌmɛnəˈdaɪəʊn/
noun
1.
a yellow crystalline compound used in fungicides and as an additive to animal feeds. Formula: C11H8O2 Also vitamin K3
Word Origin
C20: from me(thyl) + na(phtha) + di-1 + -one

vitamin K1

noun
1.
another name for phylloquinone

vitamin K2

noun
1.
another name for menaquinone

vitamin K3

noun
1.
a former name for menadione
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
Cite This Source
vitamin-k in Medicine

menadione men·a·di·one (měn'ə-dī'ōn')
n.
A synthetic vitamin K derivative occurring as a yellow crystalline powder and used as a vitamin K supplement.

vitamin K1 n.
A yellow viscous oil found in leafy green vegetables or made synthetically, used by the body to form prothrombin.

vitamin K2 n.
Any of various yellowish crystalline compounds isolated from putrefied fish meal or from various intestinal bacteria and used to stop hemorrhaging. Also called menaquinone.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for vitamin K1

Few English speakers likely know this word

Word Value for vitamin

12
15
Scrabble Words With Friends

Quotes with vitamin-k