Oxford Dictionary English coronary thrombosis nounnoun BrE BrE//ˌkɒrənri θrɒmˈbəʊsɪs// ; NAmE NAmE//ˌkɔːrəneri θrɑːmˈboʊsɪs// , NAmE//ˌkɑːrəneri θrɑːmˈboʊsɪs// (informal coronary) [countable, uncountable] (medical) Add to my wordlistjump to other results a blocking of the flow of blood by a blood clot in an artery supplying blood to the heart compare heart attackSee coronary thrombosis in the Oxford Advanced American DictionaryCheck pronunciation: coronary thrombosis oxfordlearnersdictionaries.com