impeller
/ɪmˈpɛlər/
noun
- A rotating part of a machine (such as a pump, compressor, or fan) that moves fluid or gas by spinning.
- The pump's impeller broke, so water stopped flowing.
- A damaged impeller can reduce the efficiency of the engine.
- The technician replaced the worn impeller in the ventilation system.
- A person or thing that impels; someone or something that drives or motivates action.
- The coach acted as an impeller, pushing the team to do their best.
- She was the impeller behind the new recycling program at school.
- Technology has become a major impeller of change in modern society.
Synonyms