1. plural of rotor: rotating parts of machines, especially the spinning blades of helicopters or the moving parts of electric motors

Examples

• The helicopter’s rotors spun faster as it prepared for takeoff.
• The mechanic inspected the damaged rotors after the crash.
• Wind turbines have massive rotors that capture energy from moving air.
• The electric motor’s rotors were replaced during maintenance.
• Military helicopters often have twin rotors for better stability.
• The rotors created a loud whirring sound as the aircraft approached.
• Engineers designed new rotors to improve the machine’s efficiency.