/ Dictionary / Index Q q.h.: Meaning and Definition of Find definitions for: q.h. Pronunciation: [key] (in prescriptions) each hour; every hour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Q gauge Qi Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language