1. A quinone derivative of naphthalene, reducible to naphthohydroquinone; 1,4-n. derivatives have vitamin K activity ( e.g., menaquinone). 2. A class of compounds containing the n. (1) structure.

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naph·tho·qui·none also naph·tha·qui·none .naf-thə-kwin-'ōn, .nap-, -'kwin-.ōn n any of three isomeric yellow to red crystalline compounds C10H6O2 derived from naphthalene esp one that occurs naturally in the form of derivatives (as vitamin K)

Medical dictionary. 2011.

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  • naphthoquinone — naph·tho·quinone …   English syllables

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