/ Dictionary / Index H hemi-head: Meaning and Definition of Find definitions for: hem•i-head Pronunciation: (hem'i-hed"), [key] — Auto. Auto. —n. a cylinder head having hemispherical combustion chambers. an engine having such a cylinder head; a hemi. —adj. of or pertaining to such an engine: a hemi-head V-eight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hemiglobin hemihedral Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language