The word viral means relating to viruses (small infectious agents). It may also refer to: Memetic behavior likened that of a virus, for example:

How to use viral in a sentence. Of, relating to, or caused by a virus. See examples of viral used in a sentence. Her tweet went viral, leading to widespread discussions online. The term commonly refers to something that spreads rapidly and widely, especially in relation to internet content or trends. Of, relating to, or caused by a virus.

The term commonly refers to something that spreads rapidly and widely, especially in relation to internet content or trends. Of, relating to, or caused by a virus.