transmission that combine media of communication (text and graphics and sound etc.), plurale tantum the use of different media to convey information; text together with audio, graphics and animation, often packaged on CD-ROM with links to the Internet, noun plural_ The combined use of media, such as movies, music, lighting, and the Internet, as for education, entertainment, or advertising, adjective_ Of or relating to the combined use of several media, of, or relating to this combined use of media