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Definition of virus

virus

/ˈvaɪ.ɹəs/
vi · rus

Adverb:virally
•
Plural:viruses
•
Adjective:viral
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virus Lexical Profile

virus Game Scores & Validity

• noun

1

A submicroscopic infectious agent that replicates only inside the living cells of an organism, typically consisting of genetic material (DNA or RNA) enclosed in a protein coat.


2

A malicious computer program designed to replicate itself and spread from one device to another, often causing damage to data or system software.

Example

"He had to completely reformat his hard drive after a destructive virus corrupted all of his important files."


3

A harmful or corrupting influence that spreads rapidly and pervasively.

Example

"The virus of misinformation spread swiftly across social media platforms, deeply affecting public opinion."

Synonyms
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• Rhymes for virus

Word Origin & Etymology

Late 14th century, meaning 'poisonous substance,' from Latin 'virus' meaning 'poison, slime, or venom'. The modern scientific sense of a submicroscopic infectious agent was first established in the late 19th century.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Virus. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/virus
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