virus Meaning in the Cambridge English Dictionary Cambridge dictionaries logo
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of “virus” in the English Dictionary

"virus" in British English

See all translations

virusnoun [C]

uk   /ˈvaɪə.rəs/ us   /ˈvaɪ.rəs/
  • virus noun [C] (DISEASE)

B2 an extremely small piece of organic material that causes disease in humans, animals, and plants: the chickenpox/flu/herpes/mumps virus Evidence suggested that the AIDS virus was spreading very quickly among the heterosexual community.
B2 a disease caused by a virus: I don't know exactly what's wrong with her - I think she has some kind of virus. Several employees were off work with a vomiting virus.

expend iconexpend iconMore examples

  • virus noun [C] (COMPUTER PROBLEM)

B1 a computer program or part of a computer program that can make copies of itself and is intended to prevent the computer from working normally

expend iconexpend iconMore examples

(Definition of virus from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"virus" in American English

See all translations

virusnoun [C]

us   /ˈvɑɪ·rəs/
  • virus noun [C] (SMALL ORGANISM)

biology a very small organism that causes disease in humans, animals, and plants
A virus is also a disease caused by a virus: She’s had a virus for several days.
  • virus noun [C] (COMPUTER PROBLEM)

a hidden set of instructions in a computer program that is intended to introduce faults into a computer system or cause it to perform actions that were not planned
(Definition of virus from the Cambridge Academic Content Dictionary © Cambridge University Press)

"virus" in Business English

See all translations

virusnoun [C]

uk   /ˈvaɪərəs/ us   also computer virus IT
a harmful computer program intended to prevent computers from working normally: All their customer information was wiped off the computer by a virus. I got a virus alert when I downloaded my email. Virus attacks are the largest source of financial loss, followed by unauthorized access.
See also
(Definition of virus from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of virus?
Add Cambridge dictionaries to your browser to your website

“virus” in British English

“virus” in American English

Avoiding common errors with the word enough.
Avoiding common errors with the word enough.
by ,
May 25, 2016
by Liz Walter Enough is a very common word, but it is easy to make mistakes with it. You need to be careful about its position in a sentence, and the prepositions or verb patterns that come after it. I’ll start with the position of enough in the sentence. When we use it with a noun,

Read More 

Word of the Day

sunscreen

a substance that you put on your skin to prevent it from being damaged by the sun

Word of the Day

convo noun
convo noun
May 23, 2016
informal a conversation The convo around concussions mostly focuses on guys who play football, but Chastain thinks that this whole thing could be a headache for women too.

Read More