meth·​yl·​naph·​tha·​lene ˌme-thəl-ˈnaf-thə-ˌlēn How to pronounce methylnaphthalene (audio)
: either of two isomeric hydrocarbons C11H10
especially : an oily liquid used in determining cetane numbers

Word History

First Known Use

circa 1885, in the meaning defined above

Time Traveler
The first known use of methylnaphthalene was circa 1885

Dictionary Entries Near methylnaphthalene

Cite this Entry

“Methylnaphthalene.” Dictionary, Merriam-Webster, Accessed 26 Mar. 2023.

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