naphthol

noun
naph·​thol | \ ˈnaf-ˌthȯl How to pronounce naphthol (audio) , nonstandard ˈnap-, -ˌthōl \

Definition of naphthol

1 : either of two isomeric derivatives C10H8O of naphthalene used as antiseptics and in the manufacture of dyes
2 : any of various hydroxy derivatives of naphthalene that resemble the simpler phenols

First Known Use of naphthol

1842, in the meaning defined at sense 1

History and Etymology for naphthol

International Scientific Vocabulary

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The first known use of naphthol was in 1842

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Cite this Entry

“Naphthol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/naphthol. Accessed 24 Jan. 2021.

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More Definitions for naphthol

naphthol

noun
naph·​thol | \ ˈnaf-ˌthȯl How to pronounce naphthol (audio) , ˈnap- How to pronounce naphthol (audio) , -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

More from Merriam-Webster on naphthol

Britannica.com: Encyclopedia article about naphthol

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