efavirenz

E1F4A1V4I1R1E1N1Z10
US/ɛˈfæv.ɪˌɹɛnz/US/ˌɛf.əˈvaɪˌɹɛnz/

noun

A nonnucleoside reverse-transcriptase inhibitor C₁₄H₉ClF₃NO₂ that is administered orally with other antiretroviral agents in the treatment of type-1 HIV infection.

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Meanings

nounefavirenz (uncountable, abbreviation EFV)

abbreviation EFV

  1. uncountablemedicineA nonnucleoside reverse-transcriptase inhibitor C₁₄H₉ClF₃NO₂ that is administered orally with other antiretroviral agents in the treatment of type-1 HIV infection.

    In generic form, it costs one-eighth as much as efavirenz, the most closely related drug.

    2007 January 11, Donald G. Mcneil Jr., “AIDS Drug to Protect Fetus Is Safe for Infected Mothers, Study Finds”, in New York Times

Origin

Probably from ef (“fluorine”) + -a- + -vir- (“antiviral”) + (b)enz(oxazinone).

Full word history & related roots →
Cite this entry
APA

efavirenz. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/efavirenz

MLA

“efavirenz.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/efavirenz. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “efavirenz,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/efavirenz.

Source: efavirenz on Wiktionary, CC BY-SA 4.0.