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virus  - definition and synonyms

 
 
 
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noun [countable] virus pronunciation in British English /ˈvaɪrəs/
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singularvirus
pluralviruses
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  1. 1
    biology a simple living thing that is smaller than bacteria and that can enter your body and make you ill. If your body can protect itself against a particular virus, then you are immune to it. A vaccine is a medicine that makes you immune to a particular virus

    Malaria is caused by a virus carried by mosquitos.

    the AIDS virus

    1. a.
      a disease caused by a virus

      I’ve been in bed all week with a virus.

    See also bacteria
  2. 2
    computing a program that enters your computer and damages or destroys information that you have stored

    Most viruses are spread over the Internet.

bit rot

when electronic information is lost because the software or devices needed to read it are no longer available

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