/ Dictionary / Index T tachypnea: Meaning and Definition of Find definitions for: tach•yp•ne•a Pronunciation: (tak"ip-nē'u, tak"i-nē'u), [key] — n. Med. excessively rapid respiration. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tachyphylaxis tachytelic Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language