[{"Bold_text": "noun", "List Items": ["Electronics.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: although much smaller in size than a vacuum tube, it performs similar functions without requiring current to heat a cathode.", "Informal.a transistorized ."]}, {"Bold_text": "adjective", "List Items": ["Informal. transistorized :a transistor radio."]}]