/ Dictionary / Index H half-hour: Meaning and Definition of Find definitions for: half-hour Pronunciation: (haf'our', -ou'ur, häf'-), [key] — n. a period of 30 minutes. the midpoint between the hours: The clock struck on the half-hour. —adj. of, pertaining to, or consisting of a half-hour: half-hour programs. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: half-hour (Thesaurus) half hose halfhourly Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language