/ Thesaurus / C Synonyms of coronary sinus Find synonyms for: Noun1. coronary sinus, sinus coronarius, venous sinus, sinususage: a short sinus receiving most of the veins of the heart; empties into the right atriumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language