hemi.
A motor with hemispherical combustion chambers. A piston engine internal combustion engine with hemispherical piston cylinder heads.
Meaning & usage
A motor with hemispherical combustion chambers. A piston engine internal combustion engine with hemispherical piston cylinder heads.
A combustion chamber with the hemispherical cylinder head from such an engine.
A hemispherical cylinder head from such a motor.
A vehicle equipped with such a motor engine.
Domed versions of the above that have cylinder heads that are not exactly hemispherical
Where this word comes from
Clipping of hemisphere.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.