virus
noun
/ˈvaɪɹəs/
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- A submicroscopic, non-cellular structure consisting of a core of DNA or RNA surrounded by a protein coat, that requires a living host cell to replicate, and often causes disease in the host organism; such agents are often classed as nonliving infectious particles and less often as microorganisms.
- (uncountable) A quantity of such infectious agents
- (informal, metonymically) A disease caused by such an infectious agent; a viral illness.
- (computing) A type of malware which can covertly transmit itself between computers via networks (especially the Internet) or removable storage such as disks, often causing damage to systems and data; also computer virus.
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virus
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