viral
US /ˈvaɪ.rəl/
UK /ˈvaɪ.rəl/
1.
of or relating to a virus
:
•
The doctor diagnosed a viral infection.
•
Many common colds are caused by viral agents.
2.
(of an image, video, piece of information, etc.) circulated rapidly and widely from one internet user to another
:
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The video went viral within hours of being posted.
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Her tweet went viral and was shared by millions.