Definition of virus noun from the Oxford Advanced American Dictionary

      

    virus

     noun
    noun
    NAmE//ˈvaɪrəs//
     
     
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  1. 1a living thing, too small to be seen without a microscope, that causes infectious disease in people, animals, and plants the flu virus a virus infection Topic CollocationsThe Living Worldanimals animals mate/breed/reproduce/feed (on something) fish/amphibians swim/spawn (= lay eggs) birds fly/migrate/nest/sing insects crawl/fly/bite/sting insects/bees/locusts swarm bees collect/gather nectar/pollen spiders spin/weave a web snakes/lizards shed their skins bears/hedgehogs/frogs hibernate insect larvae grow/develop/pupate an egg/a chick/a larva hatches attract/find/choose a mate produce/release eggs/sperm lay/fertilize/incubate/hatch eggs inhabit a forest/a reef/the coast mark/enter/defend (a) territory stalk/hunt/capture/catch/kill preyplants and fungi trees/plants grow/bloom/blossom/flower a seed germinates/sprouts leaves/buds/roots/shoots appear/develop/form flower buds swell/open a fungus grows/spreads/colonizes something pollinate/fertilize a flower/plant produce/release/spread/disperse pollen/seeds/spores produce/bear fruit develop/grow/form roots/shoots/leaves provide/supply/absorb/extract/release nutrients perform/increase/reduce photosynthesisbacteria and viruses bacteria/microbes/viruses grow/spread/multiply bacteria/microbes live/thrive in/on something bacteria/microbes/viruses evolve/colonize something/cause disease bacteria break something down/convert something (into something) a virus enters/invades something/the body a virus mutates/evolves/replicates (itself) be infected with/contaminated with/exposed to a new strain of a virus/drug-resistant bacteria contain/carry/harbor bacteria/a virus kill/destroy/eliminate harmful/deadly bacteria
  2. 2(informal) a disease caused by a virus There's a virus going around the office.
  3. 3 instructions that are hidden within a computer program and are designed to cause faults or destroy data The virus in the software was programmed to corrupt the hard disk. Topic CollocationsE-mail and the Internete-mail receive/get/open an e-mail write/send/answer/forward/delete an e-mail check/read/access your e-mail block/filter (out) junk/spam/unsolicited e-mails exchange e-mail addresses open/check your inbox junk mail fills/floods/clogs your inbox have/set up an e-mail account open/send/contain an attachment sign up for/receive e-mail alertsconnecting to the Internet use/access/log onto the Internet/the Web go online/on the Internet have a high-speed/dial-up/broadband/wireless (Internet) connection access/connect to/locate a server use/open/close/launch a/your Web browser browse/surf/search/scour the Internet/the Web send/contain/spread/detect a (computer/e-mail) virus update your anti-virus software install/use/configure a firewall accept/enable/block/delete cookiesusing the Internet visit/check a Web site/an Internet site/somebody's blog create/design/launch a Web site/social networking site start/write/post/read/follow a blog update your blog/a Web site be in/meet somebody in/go into/enter an Internet chat room download/upload music/software/a song/a podcast/a file/a copy of something share information/data/files post a comment/message on a Web site/on a message board/in a Web forum/in an Internet chat room stream video/audio/music/content over the Internet join/participate in/visit/provide a (Web-based/web/online/Internet/discussion) forum generate/increase/monitor Internet traffic see also viral
See the Oxford Advanced Learner's Dictionary entry: virus

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