ar·​e·​na·​vi·​rus | \ ˌer-ə-nə-ˈvī-rəs How to pronounce arenavirus (audio) , ˌa-rə- \

Definition of arenavirus

: any of a family (Arenaviridae) of single-stranded RNA viruses having a dense outer lipid envelope covered by numerous club-shaped projections and including the causative agents of lymphocytic choriomeningitis and Lassa fever

Examples of arenavirus in a Sentence

Recent Examples on the Web In the lab, Arturo prepared grids of viral proteins to better visualize a particular pathogen—a type of arenavirus—and discover how to neutralize it. Jillian Kramer, Scientific American, 12 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arenavirus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of arenavirus

1971, in the meaning defined above

History and Etymology for arenavirus

New Latin, ultimately from Latin arena sand + New Latin virus; from the fine granules seen in cross sections of the virion

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The first known use of arenavirus was in 1971

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arena theater



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Cite this Entry

“Arenavirus.” Dictionary, Merriam-Webster, Accessed 24 May. 2022.

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More Definitions for arenavirus


are·​na·​vi·​rus | \ ˌar-ə-nə-ˈvī-rəs, ə-ˌrē- \

Medical Definition of arenavirus

1 capitalized : a genus of the family Arenaviridae that includes the Machupo virus, the Junin virus, and the causative agents of lymphocytic choriomeningitis and Lassa fever
2 : any of the family Arenaviridae of single-stranded RNA viruses

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