1. a person who directs an orchestra, choir, or other musical group
2. a person who collects fares or tickets on a train or bus
3. a material or object that allows electricity, heat, or sound to pass through it easily
Usage: physics

Examples

• The conductor raised his baton to begin the symphony.
• She studied for years to become a professional conductor.
• The train conductor checked our tickets before departure.
• The bus conductor announced the next stop.
• Copper is an excellent conductor of electricity.
• Metal is a good conductor of heat.
• Lightning rods work because metal is a conductor.