1. A rotating part of a pump, compressor, or turbine that moves fluid or gas by centrifugal force
The impeller in the water pump circulates coolant through the engine.
A impelia da bomba d'água circula o líquido de arrefecimento através do motor.
2. The rotor or blade assembly that propels or moves a medium in mechanical devices
The damaged impeller needed replacement to restore pump efficiency.
A impelia danificada precisava ser substituída para restaurar a eficiência da bomba.