/ Dictionary / Index T thoracoplasty: Meaning and Definition of Find definitions for: tho•ra•co•plas•ty Pronunciation: (thôr'u-kō-plas"tē, thōr'-), [key] — pl. -ties. the operation removing selected portions of the ribs to collapse part of the underlying lung or an abnormal pleural space, usually in the treatment of tuberculosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thoraco- thoracostomy Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language