(virology) Of or relating to a biological virus. / (virology) Caused by a virus. / (computing) Of the nature of an informatic virus; able to spread copies of itself to other computers.

(marketing) A video, image or text spread by "word of mouth" on the internet or by e-mail for humorous, political or marketing purposes.

(advertising, marketing) The state or condition of being viral; tendency to spread by word of mouth.

plural of virality

In a viral fashion; often specifically in the context of viral marketing. / (medicine) Due to, or by means of, a virus or viruses.

The act or the process of going viral

plural of viral

(advertising, marketing) Synonym of virality

The process by which two viruses meet in a single host and reproduce to create a new virus that includes genetic material from both of them.

(sociology) To be rapidly and frequently shared, especially through social media, but (with retroactive application to pre-internet occurrences) also via gossip or as a collective response to broadcasting or widespread print circulation.