viral
US /ˈvaɪ.rəl/
UK /ˈvaɪ.rəl/

1.
病毒性的
of or relating to a virus
:
•
The doctor diagnosed a viral infection.
医生诊断出病毒性感染。
•
Many common colds are caused by viral agents.
许多普通感冒是由病毒性病原体引起的。
2.
病毒式传播的, 走红的
(of an image, video, piece of information, etc.) circulated rapidly and widely from one internet user to another
:
•
The video went viral within hours of being posted.
该视频发布后数小时内就走红了。
•
Her tweet went viral and was shared by millions.
她的推文走红,被数百万人分享。