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Definition of impeller

impeller

/ɪmˈpɛl.ɚ/
im · pel · ler
Plural:impellers
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impeller Lexical Profile

impeller Game Scores & Validity

• noun

1

A rotating mechanical component equipped with vanes or blades used inside a pump, compressor, or turbine to increase the pressure and flow of a fluid or gas.

Example

"The mechanic replaced the worn plastic impeller inside the water pump to restore proper coolant circulation."

2

A person or thing that impels, drives, or urges someone or something forward.

Example

"Economic necessity has historically been the primary impeller of large-scale human migration."

Synonyms
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Antonyms
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Word Nuance & Usage

In fluid dynamics, an impeller is enclosed within a housing or pipe to create pressure and move fluid, whereas a propeller operates in an open medium to generate thrust.

• Rhymes for impeller

• Nearby Words

impede
impediment
impel
impeller
impending
impenetrable
imperative

Word Origin & Etymology

Formed in English from the verb 'impel' (from Latin impellere, meaning 'to drive against or push forward') combined with the agent suffix '-er'.

Cite this Entry

Wordmom. (2026). Definition of Impeller. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/impeller
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