Use of the word multimedia is discussed in terms of cultural history, English grammar, classical rhetoric, communication technology, and recent articles by audiovisualists. Against this background, adjectival usage is seen as traditional, and nominative usage is shown to be justified by precedent and specialist practice, although not yet widely conven- tional. The following definitions are offered for general acceptance: multimedia (adjective)—involving several media; referring to any mixture of communication media, including mediated lectures, TV, film, drama, collages, and slide/tape programs multimedia (noun)—multiple-projection presentations reinforced by sound, and methods or equipment used to make such presentations; a method of communication which uses multi-image techniques combining static and moving projections with live or reproduced sound.