/ Dictionary / Index P -pnea: Meaning and Definition of Find definitions for: -pnea Pronunciation: [key] a combining form meaning “breath, respiration,” used in the formation of compound words that denote a kind of breathing or condition of the respiratory system, as specified by the initial element: dyspnea; hyperpnea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. PN pneudraulic 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