naphtholPronunciation: /ˈnafθɒl/Definition of naphthol noun [mass noun] Chemistry a crystalline solid derived from naphthalene, used to make antiseptics and dyes. Chemical formula: C10H7OH; two isomers, especially naphthalen-2-ol ( β-naphthol) naphthol in other Oxford dictionaries Definition of naphthol in the US English dictionary
