/ Dictionary / Index Q quarter-hour: Meaning and Definition of Find definitions for: quar•ter-hour Pronunciation: (kwôr'tur our', -ou'ur), [key] — n. a period of 15 minutes. a point 15 minutes after or before the hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: quarter-hour (Thesaurus) quarter horse quartering Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language