coronary artery bypass graft
noun(coronary artery bypass)
a surgical procedure performed to shunt blood around a narrowing or blockage in the coronary artery of the heart that usually involves grafting one end of a segment of blood vessel (such as a vein of the leg) removed from another part of the body into the aorta and the other end of the segment into the coronary artery beyond the obstructed area to allow for increased blood flow —often followed by the word surgery or operation —abbreviation CABG