Source : WordNet®

multimedia
     n : transmission that combine media of communication (text and
         graphics and sound etc.) [syn: {multimedia system}]

Source : Free On-Line Dictionary of Computing

multimedia
     
        Human-computer interaction involving text, graphics, voice and
        video.  Often also includes concepts from {hypertext}.
     
        This term has come to be almost synonymous with {CD-ROM} in
        the {personal computer} world because the large amounts of
        data involved are currently best supplied on CD-ROM.
     
        {Usenet} newsgroup: {news:comp.multimedia}.
     
        (1994-12-02)