antiviral

adjective
an·​ti·​vi·​ral | \ ˌan-tē-ˈvī-rəl How to pronounce antiviral (audio) , ˌan-tī- \

Definition of antiviral

 (Entry 1 of 2)

1 medical : acting, effective, or directed against viruses an antiviral vaccine/drug
2 : used to protect a computer from viruses : antivirus antiviral software

antiviral

noun

Definition of antiviral (Entry 2 of 2)

: an antiviral agent and especially a drug antivirals used in treating influenza

Examples of antiviral in a Sentence

Recent Examples on the Web: Adjective Drugmaker Merck announced on Friday that its antiviral drug, molnupiravir, cut the risk of hospitalization and death in sick individuals by half. Emily Mullin, Fortune, 5 Oct. 2021 On Friday, the pharmaceutical company Merck said molnupiravir, an investigational antiviral drug made by Merck and Ridgeback Biotherapeutics, can reduce the risk of hospitalization or death from Covid-19 by half. Madeline Holcombe, CNN, 5 Oct. 2021 And the drugmaker Merck has announced that its experimental oral antiviral drug halved the risk of COVID hospitalizations and deaths in a new study. Anna Buchmann, San Francisco Chronicle, 4 Oct. 2021 The news last week of the success of an experimental antiviral drug from Merck (MRK) in treating Covid gives hope that future variants won’t be as damaging. Bill Stone, Forbes, 3 Oct. 2021 Co-anchor Michael Che marveled at a new antiviral drug that has shown promise to treat Covid-19. NBC News, 2 Oct. 2021 In 2020, stricken by COVID-19, President Donald Trump was injected with an experimental drug combination at the White House before being flown to a military hospital, where he was given Remdesivir, an antiviral drug. BostonGlobe.com, 2 Oct. 2021 There's promising news about an experimental antiviral drug against COVID-19. USA TODAY, 2 Oct. 2021 Merck announced encouraging results form a study of its COVID-19 antiviral drug, molnupiravir. Alice Park, Time, 1 Oct. 2021 Recent Examples on the Web: Noun Atea Pharmaceuticals also is working on an oral antiviral with pharmaceutical giant Roche. Compiled Democrat-gazette Staff From Wire Reports, Arkansas Online, 2 Oct. 2021 The news of the efficacy of this particular antiviral is, obviously, very good news. USA TODAY, 2 Oct. 2021 The drug is the first oral antiviral against COVID-19, and is meant to be prescribed for people who develop symptoms of COVID-19 but are not sick enough to require hospitalization. Alice Park, Time, 1 Oct. 2021 If cleared by regulators, the drug would be the first oral antiviral for Covid-19. Betsy Mckay, WSJ, 1 Oct. 2021 Two others include a candidate from Pfizer, known as PF-07321332, and AT-527, an antiviral produced by Roche and Atea Pharmaceuticals. Jonel Aleccia, USA TODAY, 24 Sep. 2021 Two others are a candidate from Pfizer, known as PF-07321332, and AT-527, an antiviral produced by Roche and Atea Pharmaceuticals. NBC News, 23 Sep. 2021 Ivermectin is not approved by the FDA as an antiviral and the agency has advised against using it to treat COVID-19. Chacour Koop, al, 1 Sep. 2021 Ivermectin is not approved by the FDA as an antiviral and the agency has advised against using it to treat COVID-19. Tribune News Service, oregonlive, 2 Sep. 2021

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

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First Known Use of antiviral

Adjective

1929, in the meaning defined at sense 1

Noun

1959, in the meaning defined above

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Time Traveler for antiviral

Time Traveler

The first known use of antiviral was in 1929

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Dictionary Entries Near antiviral

anti-violence

antiviral

antivirotic

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Statistics for antiviral

Last Updated

10 Oct 2021

Cite this Entry

“Antiviral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antiviral. Accessed 20 Oct. 2021.

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More Definitions for antiviral

antiviral

adjective
an·​ti·​vi·​ral | \ -ˈvi-rəl How to pronounce antiviral (audio) \
variants: also antivirus \ -​rəs How to pronounce antiviral (audio) \

Medical Definition of antiviral

 (Entry 1 of 2)

: acting, effective, or directed against viruses antiviral drugs

antiviral

noun

Medical Definition of antiviral (Entry 2 of 2)

: an antiviral agent and especially a drug

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