2TD [countable]TDa set of instructions secretly put onto a computer or computer program, which can destroy information. When a computer that has a virus makes a connection with another computer, for example byemail, the virus can make copies of itself and move to the other computer
3 [countable]a program that sends a large number of annoying messages to many people'smobile phones in an uncontrolled way
WORD FOCUS: computer WORD FOCUS: computer people who work with computers:user, programmer, web designer, IT person, software engineer, (systems) analyst, administrator, webmaster, helpdesk, techieinformal, geekdisapproving informal someone who tries to break into a computer system:hacker, cracker things you do with your computer:start up/power upyour computer opena file or document enterinformation click onan icon cut and pastepieces of text copyfiles or programs scroll up and down the page deletethings you do not want downloadfiles or pictures from the Internet burnCDs or DVDs closea file or document saveyour work shut downyour computer computer problems:bug, virus, error, corrupted file/data, crash, wormcomputer ➔ See alsocomputer
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.