/ Dictionary / Index T thoracic artery: Meaning and Definition of Find definitions for: thorac'ic ar'tery Pronunciation: [key] — Anat. Anat. any of several arteries that distribute blood to the muscles and organs of the thorax: used as a replacement artery in coronary bypass surgery. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thoracic thoracic duct Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language