/ Dictionary / Index P Pitot tube: Meaning and Definition of Find definitions for: Pi'tot tube" Pronunciation: (pē'tō, pē-tō'), [key] (often l.c.) an instrument for measuring fluid velocity, consisting of a narrow tube, one end of which is open and faces upstream, the other end being connected to a manometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pitot-static tube Pitri Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language