<p><strong>Noun</strong></p><ul><li>a semiconductor device that amplifies, oscillates, or switches the flow of current between two terminals by varying the current or voltage between one of the terminals and a third.</li><li>Informal: a transistorized radio.</li></ul><p><strong>Adjective</strong></p><ul><li>Informal: transistorized; relating to a transistor radio.</li></ul>