/ Dictionary / Index H hemi: Meaning and Definition of Find definitions for: hem•i Pronunciation: (hem'ē), [key] — n. Auto. an internal-combustion engine having hemispherical combustion chambers. hemi- Pronunciation: [key] a combining form meaning “half,” used in the formation of compound words: hemimorphic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hemet -hemia Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language