1. a rotating part of a machine (such as a pump or compressor) that moves fluid by spinning
Usage: mechanical engineering

Examples

• The water pump’s impeller was damaged and needed replacement.
• The centrifugal pump uses an impeller to move water through the system.
• Engineers designed a new impeller to improve the pump’s efficiency.
• The impeller spins rapidly to create pressure and move the fluid.
• A clogged impeller can reduce the pump’s performance significantly.
• The technician removed the impeller for cleaning and inspection.