Definitions
1.AdjectiveOf or relating to a biological virus."viral DNA"
2.AdjectiveCaused by a virus."viral infection"
3.AdjectiveOf the nature of an informatic virus; able to spread copies of itself to other computers.
4.AdjectiveSpread by word of mouth with minimal intervention, in order to create buzz and interest.
5.AdjectiveCirculated rapidly and widely from one user to another.
6.NounA video, image or text spread by "word of mouth" on the internet or by e-mail for humorous, political or marketing purposes.