Definition, Meaning & Synonyms
virus
noun
/ˈvaɪ.rəs/

Definition
A virus is a tiny infectious agent that can only replicate inside the living cells of an organism.

Examples
- Influenza is caused by a virus that spreads easily among people.
- Scientists are studying the structure of a newly discovered virus.

Meaning
In the context of biology, a virus is a microscopic entity that can infect living organisms, causing diseases.

Synonyms
- Pathogen
- Infectious agent