naphthaquinone\ˌnaf-thə-kwin-ˈōn, ˌnap-, -ˈkwin-ˌōn\play
Medical Definition of naphthoquinone
: any of three isomeric yellow to red crystalline compounds C10H6O2 derived from naphthalene; especially : one that occurs naturally in the form of derivatives (as vitamin K)
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