menaquinone

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|vitamin|pharmaceutical drug}} A [[pale]] [[yellow]] [[crystalline]] [[naphthoquinone]] C₄₁H₅₆O₂ that is obtained especially from [[putrefied]] [[fish meal]] and produced by [[bacterium|bacteria]] in the [[large intestine]] and essential for the [[coagulation|blood-clotting]] process. It is much more [[unsaturated]] than [[vitamin K1|vitamin K₁]] and slightly less [[w:biological activity|active biologically]], and is an [[isoprenoid]] [[derivative]] of [[menadione]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.