osel·​tam·​i·​vir | \ ˌō-ˌsel-ˈta-mə-ˌvir How to pronounce oseltamivir (audio) \

Definition of oseltamivir

: an antiviral drug that is taken orally in the form of its phosphate C16H28N2O4·H3PO4 and is a neuraminidase inhibitor used in the treatment and prevention of influenza A and B The current countermeasures against seasonal influenza are the use of annual vaccines and antiviral drugs, such as oseltamivir.— Charles J. Russell Research has shown that taking a prescription antiviral, such as oseltamivir or zanamivir, in the first 48 hours after contracting the flu virus can speed recovery.— Francesca Castagnoli

First Known Use of oseltamivir

1998, in the meaning defined above

History and Etymology for oseltamivir

oselt- (of undetermined origin) + -ami-, infix denoting a neuraminidase inhibitor (from neuraminidase) + -vir, combining element denoting an antiviral compound (from virus)

Note: According to the prescriptions of the U.S. Adopted Names Council, the initial element in generic drug names is to be meaningless.

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The first known use of oseltamivir was in 1998

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Cite this Entry

“Oseltamivir.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oseltamivir. Accessed 6 Jul. 2020.

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osel·​tam·​i·​vir | \ ˌō-ˌsel-ˈtam-ə-ˌvir How to pronounce oseltamivir (audio) \

Medical Definition of oseltamivir

: an antiviral drug administered orally in the form of its phosphate C16H28N2O4·H3PO4 in the treatment and prevention of influenza A and B

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