Real Dictionary

multimedia
You use multimedia to refer to computer programs and products which involve sound, pictures, and film, as well as text.

multimedia in American English
a combination of media, as film, tape recordings, slides, and special lighting effects, used for entertainment or education
for or using multimedia
the combined use of several media, as sound and full-motion video in computer applications
adjective: of, pertaining to, or involving the use of multimedia

multimedia in British English
adjective: of or relating to the use of a combination of media
plural noun: the combined use of media such as television, slides, etc, esp in education