viral /ˈvaɪɹəl/adjective 5noun 1forms 1 adjective5 •Of or relating to a biological virus. •Caused by a virus. •Spread by word of mouth with minimal intervention, in order to create buzz and interest.“Efficient way to disseminate information? I don't think.” “But it is,” Cayce insists. “The model's viral. ‘Deep niche.’ The venues would be carefully selected—” — 2003 •Circulated rapidly and widely from one user to another. •Of the nature of an informatic virus; able to spread copies of itself to other computers. noun1 •A video, image or text spread by "word of mouth" on the internet or by e-mail for humorous, political or marketing purposes.Using the Flash ActiveX control in this way allows you as a developer to create desktop characters, email virals and screensavers. — 2002 formsvirals