Breadcrumb Home > Dictionary > Index T thoracotomy: Meaning and Definition of Find definitions for: tho•ra•cot•o•my Pronunciation: (thôr"u-kot'u-mē, thōr"-), [key] — pl. -mies. incision into the chest cavity. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thoracotomy (Thesaurus) thoracostomy thorax TrendingHere are the facts and trivia that people are buzzing about. Did Birds Evolve from Dinosaurs? The Twelve Dancing Princesses Current Events This Week: January 2023 African Americans by the Numbers Andersen's Fairy Tales: Contents The Celtic Twilight: A Teller of Tales ✖ Related Content Daily Word Quiz: minatory Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language