/ Dictionary / Index H hypopnea: Meaning and Definition of Find definitions for: hy•pop•ne•a Pronunciation: (hī-pop'nē-u, hi-), [key] — n. Pathol. abnormally shallow and slow breathing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hypopnea (Thesaurus) hypoploid hypopotassemia Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language