The Oxford Thesaurus An A-Z Dictionary of Synonyms - mediumadj.

1) average, middle, mid, medial, median, normal, standard, usual, everyday, ordinary; mid-sized: His wife has an estate car of medium size - nothing extravagant. 2) See mediocre, above. --n. 3) average, middle, mid-point, compromise, centre, mean, norm, mediocrity: Instead of going to extremes, try for the happy medium. 4) atmosphere, environment, ambience or ambiance, milieu: The air serves as a medium of sound. The light is refracted as it passes into a denser medium. 5) means, method, mode, approach, instrumentality, device, mechanism, intermediation, technique, contrivance, agency, expedient, way, course, route, road, avenue, channel, conveyance, vehicle: Latin and Greek were the media of the scholarship, the science, and the theology of the Middle Ages. Television is a powerful advertising medium.