Definition of viral
adjective
1of the nature of, caused by, or relating to a virus or viruses.
2relating to or involving an image, video, piece of information, etc., that is circulated rapidly and widely from one Internet user to another:a viral video ad the video went viral and was seen by millions
noun
an image, video, advertisement, etc., that is circulated rapidly on the Internet:the rise of virals in online marketing
