antiviral

1 of 2

adjective

an·​ti·​vi·​ral ˌan-tē-ˈvī-rəl How to pronounce antiviral (audio)
ˌan-tī-
1
medical : acting, effective, or directed against viruses
an antiviral vaccine/drug
2
: used to protect a computer from viruses : antivirus
antiviral software

antiviral

2 of 2

noun

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

Examples of antiviral in a Sentence

Recent Examples on the Web
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Adjective
Advertisement Health officials said in a statement that people who had direct contact with the cats are now being monitored for symptoms and have been offered Tamiflu or other antiviral medications. Susanne Rust, Los Angeles Times, 12 Dec. 2024 Seek medical attention early to get tested and receive antiviral medications for flu or COVID-19. Nicole Villalpando, Austin American-Statesman, 10 Dec. 2024
Noun
Nuzzo, of the Brown University School of Public Health, said that while antivirals are important for anyone exposed to or infected with the virus, their effectiveness is limited by a very small window of time in which they must be given. Berkeley Lovelace Jr., NBC News, 11 Dec. 2024 While most people won't need them, antivirals are available. Merve Ceylan, Health, 21 Oct. 2024 See all Example Sentences for antiviral 

Word History

First Known Use

Adjective

1929, in the meaning defined at sense 1

Noun

1959, in the meaning defined above

Time Traveler
The first known use of antiviral was in 1929

Dictionary Entries Near antiviral

Cite this Entry

“Antiviral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antiviral. Accessed 22 Dec. 2024.

Medical Definition

antiviral

1 of 2 adjective
an·​ti·​vi·​ral -ˈvi-rəl How to pronounce antiviral (audio)
variants also antivirus
: acting, effective, or directed against viruses
antiviral drugs

antiviral

2 of 2 noun
: an antiviral agent and especially a drug
Last Updated: - Updated example sentences
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