/ Dictionary / Index C coronary thrombosis: Meaning and Definition of Find definitions for: cor'onary thrombo'sis Pronunciation: [key] — Pathol. Pathol. a coronary occlusion in which there is blockage of a coronary arterial branch by a blood clot within the vessel, usually at a site narrowed by arteriosclerosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coronary sinus coronary vein Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language