Pronunciation: (on'skrēn', ôn'-),[key] —adj. 1. occurring within a motion picture or television show or in an actor's professional life: a raucous on-screen personality that was at odds with his quiet private life. 2. displayed on a television screen; supplied by means of television: an on-screen course in economics.
—adv. in a motion picture or television program or in one's professional life: On-screen he's a villain.