coronary bypass

coronary bypass
    n 1: open-heart surgery in which the rib cage is opened and a
         section of a blood vessel is grafted from the aorta to the
         coronary artery to bypass the blocked section of the
         coronary artery and improve the blood supply to the heart
         [syn: {coronary bypass}, {coronary bypass surgery},
         {coronary artery bypass graft}, {CABG}]