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naphthol Syllabification: naph·thol
Pronunciation: /ˈnafTHôl/ /ˈnap-/ /-THäl/

Definition of naphthol in English:


A crystalline solid derived from naphthalene, used to make antiseptics and dyes.
Example sentences
  • Some of the dyes to which chromophores give a vibrant color are naphthol yellow, vat blue, congo red, and methylene blue.
  • Finally, it is mixed with naphthol to produce carbaryl.
  • Certain molecules such as 1 - naphthol, its derivatives, and carbazole show remarkable enhancement in their acidity in the excited singlet state.

Definition of naphthol in:

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