vi·rus 
/ˈvaɪrəs/ noun
plural vi·rus·es /ˈvaɪrəs/ noun [count] 1 : an extremely small living thing that causes a disease and that spreads from one person or animal to another
▪ the AIDS virus = the virus that causes AIDS ▪ Is the illness caused by bacteria or a virus? 2 : a disease or illness caused by a virus : a viral disease
▪ I think I have the virus that's going around this winter. ▪ a stomach virus 3 computers : a program that is designed to harm a computer by deleting data, ruining files, etc., and that can be spread secretly from one computer to another
▪ The software checks your hard drive for viruses.
▪ the AIDS virus = the virus that causes AIDS ▪ Is the illness caused by bacteria or a virus?
▪ I think I have the virus that's going around this winter. ▪ a stomach virus
▪ The software checks your hard drive for viruses.
