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

First recorded in 1940–45; me(thyl) + na(phthalene) + di-1 + -one

British Dictionary definitions for menadione

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 menadione

menadione
[ mĕn′ə-dīōn′ ]

n.

A synthetic vitamin K derivative occurring as a yellow crystalline powder and used as a vitamin K supplement.