Medical Dictionary


noun naph·thol \ˈnaf-ˌthl, ˈnap-, -ˌthōl\

Medical Definition of NAPHTHOL

:  either of two isomeric derivatives C10H8O of naphthalene found in coal tar or made synthetically: a :  one used chiefly in synthesizing dyes—called also alpha-naphthol b :  one used chiefly as an intermediate (as for dyes and pharmaceuticals) and especially formerly in medicine as an antiseptic and parasiticide—called also beta-naphthol
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