<p><strong>Noun</strong></p><ul><li>(used with a singular verb) the combined use of several media, medium, as sound and full-motion video in computer applications</li></ul><p><strong>Adjective</strong></p><ul><li>of, relating to, or involving the use of multimedia</li><li>having or offering the use of various communications or promotional media: medium: a multimedia corporation that owns TV stations and newspapers</li></ul>