Pronunciation: (kun-duk'tur),[key] —n. 1. a person who conducts; a leader, guide, director, or manager.
2. an employee on a bus, train, or other public conveyance, who is in charge of the conveyance and its passengers, collects fares or tickets, etc.
3. a person who directs an orchestra or chorus, communicating to the performers by motions of a baton or the hands his or her interpretation of the music.
4. a substance, body, or device that readily conducts heat, electricity, sound, etc.: Copper is a good conductor of electricity. 5. See lightning rod.