coronary artery noun

One of the branching arteries supplying blood to the heart-wall from the aorta

coronary artery bypass noun

A surgical procedure to restore adequate oxygen supply to the heart muscle by attaching lengths of vein taken from eg the leg to the aorta and bypassing blocked coronary arteries (also coronary bypass graft)

coronary care unit noun

A hospital ward in which patients are treated after a heart attack (abbrev CCU)

coronary thrombosis noun

A stoppage in a branch of a coronary artery by a clot of blood, which causes part of the heart muscle to die (see also myocardial infarction under myo-)