Meaning of “virus” - Learner’s Dictionary


noun [ C ] us uk /ˈvaɪərəs/

B2 an infectious organism too small to be seen that causes disease, or an illness that it causes:

The doctor says I've got a virus.

More examples


B1 a program that is secretly put onto a computer in order to destroy the information that is stored on it

(Definition of “virus” from the Cambridge Learner’s Dictionary © Cambridge University Press)