|1.||an official on a bus who collects fares, checks tickets, etc|
|2.||Also called (esp US): director a person who conducts an orchestra, choir, etc|
|3.||a person who leads or guides|
|4.||(US), (Canadian) a railway official in charge of a train|
|5.||a substance, body, or system that conducts electricity, heat, etc|
|6.||See lightning conductor|
conductor [%PREMIUM_LINK%] (kən-dŭk'tər) Pronunciation Key |
A material or an object that conducts heat, electricity, light, or sound. Electrical conductors contain electric charges (usually electrons) that are relatively free to move through the material; a voltage applied across the conductor therefore creates an electric current. Insulators (electrical nonconductors) contain no charges that move when subject to a voltage. Compare insulator. See also resistance, superconductivity.