an·​ti·​py·​rine ˌan-tē-ˈpī-ˌrēn How to pronounce antipyrine (audio)
: an analgesic and antipyretic C11H12N2O formerly widely used but now largely replaced in oral use by less toxic substances (such as aspirin)

Word History


from Antipyrine, a trademark

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of antipyrine was in 1884

Dictionary Entries Near antipyrine

Cite this Entry

“Antipyrine.” Dictionary, Merriam-Webster, Accessed 19 Jul. 2024.

Medical Definition


an·​ti·​py·​rine -ˈpī(ə)r-ˌēn How to pronounce antipyrine (audio)
variants also antipyrin
: an analgesic and antipyretic C11H12N2O that has been used topically to treat ear pain associated with middle ear infection

called also phenazone

More from Merriam-Webster on antipyrine

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