Software downloaded from the Internet that displays advertisements on personal computers, often without the user's permission

Simple past tense and past participle of download

Capable of being downloaded

To transfer (data or a program) from a central computer or website to a peripheral computer or device, To download data or a program, transitive verb_ To transfer (computer data, especially as one or more files) from a remote computer (server) to a local computer, usually via a network, nonstandard to transfer a file to or from removable media, nonstandard to install software, verb_ transfer a file or program from a central computer to a smaller computer or to a computer at a remote location, noun_ An instance of downloading data or a program, A file that has been downloaded, A file transfer to the local computer, especially one in progress