What does coronary bypass surgery mean?
• CORONARY BYPASS SURGERY (noun) The noun CORONARY BYPASS SURGERY has 1 sense: 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 Familiarity information: CORONARY BYPASS SURGERY used as a noun is very rare.