an·​ti·​vi·​rus | \ ˌan-tē-ˈvī-rəs How to pronounce antivirus (audio) , ˌan-tī-\

Definition of antivirus

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

Examples of antivirus in a Sentence

Recent Examples on the Web

Several months ago, antivirus company Avast began looking under the hood of malware called Retadup, which had infected around 850,000 Windows computers. Wired, "Security News This Week: Cops Take Over a Botnet to Clear Malware Off PCs," 31 Aug. 2019 And antivirus vendors could even incorporate specific detections into their scanners to monitor for suspicious audio input activity. Lily Hay Newman, WIRED, "Hackers Can Turn Everyday Speakers Into Acoustic Cyberweapons," 11 Aug. 2019 People who think their phone may be infected should install an antivirus app from Check Point, Symantec, or Lookout and scan for malicious apps. Dan Goodin, Ars Technica, "Menacing Android botnet still thrives 16 months after coming to light," 26 Jan. 2018 Davis also advises updating apps and using antivirus software, such as those offered by McAfee and Kaspersky. Madeline Buxton,, "Here's How To Spot & Protect Yourself Against A Phishing Scam," 14 June 2019 To Wardle's surprise, results from VirusTotal at the time showed that only two antivirus providers—Kaspersky and ZoneAlarm—detected the file as malicious. Dan Goodin, Ars Technica, "Four months after its debut, sneaky Mac malware went undetected by AV providers," 21 Dec. 2018 This last test pits antivirus suites against more than 20,000 malware samples. Ian Paul, PCWorld, "K7 Ultimate Security review: Simple yet sophisticated," 28 Aug. 2018 In 2013, antivirus company Kaspersky Lab reported that hackers using computers with Chinese and Korean language configurations used a backdoor dubbed Winnti to infect more than 30 online video game companies over the previous four years. Dan Goodin, Ars Technica, "Report: Chinese government is behind a decade of hacks on software companies," 5 May 2018 People who suspect they have been infected should install antivirus protection from a name-brand provider and thoroughly scan their systems ASAP. Dan Goodin, Ars Technica, "Rash of Fortnite cheaters infected by malware that breaks HTTPS encryption," 3 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antivirus.' 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 antivirus

1892, in the meaning defined at sense 2

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Statistics for antivirus

Last Updated

14 Sep 2019

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Time Traveler for antivirus

The first known use of antivirus was in 1892

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English Language Learners Definition of antivirus

: used to protect a computer from viruses

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Spanish Central: Translation of antivirus

Nglish: Translation of antivirus for Spanish Speakers

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