menadione

noun

men·​a·​di·​one ˌme-nə-ˈdī-ˌōn How to pronounce menadione (audio)
-dī-ˈōn
: a yellow crystalline synthetic compound C11H8O2 that is a provitamin converted to vitamin K2 in the body

called also vitamin K3

Word History

Etymology

methyl + napthalene + di- + ketone

First Known Use

1941, in the meaning defined above

Time Traveler
The first known use of menadione was in 1941

Dictionary Entries Near menadione

menad

menadione

Menadonese

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Cite this Entry

“Menadione.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/menadione. Accessed 1 Dec. 2024.

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Medical Definition

menadione

noun
men·​a·​di·​one ˌmen-ə-ˈdī-ˌōn, -dī-ˈ How to pronounce menadione (audio)
: a yellow crystalline synthetic naphthoquinone compound C11H8O2 that is a provitamin converted to vitamin K2 in the body

called also vitamin K3

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