an·​ti·​vi·​rus | \ ˌan-tē-ˈvī-rəs, 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

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 The first hospital gave him antivirus medicine and pain pills without examining him. Jay Reddick,, "DJZ overcomes horrific injury to find Impact Wrestling success," 27 June 2018 Keeping your browser updated and antivirus vigilant can help protect against it. Brad Chacos, PCWorld, "What you need to know about Speculative Store Bypass, the Spectre-like 'Variant 4' CPU flaw," 22 May 2018 This was due to the particularly invasive nature of the Meltdown fix: Microsoft found that certain antivirus products manipulated Windows' kernel memory in unsupported ways that would crash systems with the Meltdown fix applied. Peter Bright, Ars Technica, "Patch Tuesday drops the mandatory antivirus requirement after all," 13 Mar. 2018 This includes downloading daily antivirus protection software, monitoring servers and daily logs, conducting a vulnerability assessment, and taking other steps. Eric Shawn, Fox News, "States bolster defenses against Russia election hacking," 13 May 2018 While cryptojacking scripts are not necessarily actual computer viruses, most antivirus software packages also check for other types of malicious software. Richard Enbody, Scientific American, "Cryptojacking Spreads Across the Web," 9 May 2018 McAfee said hackers used the tool to custom-build a malware download that was invisible to most antivirus software and hid malicious files in an image attached to a Microsoft Word document. Timothy W. Martin, WSJ, "How North Korea’s Hackers Became Dangerously Good," 19 Apr. 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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Time Traveler for antivirus

The first known use of antivirus was in 1892

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Spanish Central: Translation of antivirus

Nglish: Translation of antivirus for Spanish Speakers

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to settle judicially or to act as judge

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