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Definition of viral adjective from the Oxford Advanced Learner's Dictionary

viral

adjective
 
/ˈvaɪrəl/
 
/ˈvaɪrəl/
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  1. like or caused by a virus
    • a viral infection
    Topics Health problemsc1
  2. used to describe a piece of information, a video, an image, etc. that is sent rapidly over the internet and seen by large numbers of people within a short time
    • a viral email
    • Within 24 hours, the video went viral on YouTube and Facebook.
See viral in the Oxford Advanced American DictionarySee viral in the Oxford Learner's Dictionary of Academic English

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