What is the medical term meaning surgical removal of an aneurysm?

Aortoplasty is a general term for surgical repair of the aorta.

That depends on the type of repair that is being performed, it can be called "Endovascular aortic aneurysm repair" when it is a surgical procedure to repair an aortic aneurysm done through the major blood vessels of the body. Depending on the procedure used and the problem being repaired different techniques may be used such as:

Patching, used when there are tears in the valve, fixed through surgical insertion of a tissue patch.

Commissurotomy, which is when the valve is narrowed, an incision of a commissure into the valve is used to fix the problem.

Reshaping, used to reshape the valve so that it can close properly.

Valvuloplasty, used to increase opening of valve and improve blood flow when the valve has become rigid with calcium buildup. This is done through the insertion of a balloon catheter.

Decalcification, used when there is a calcium build up, removes excess calcium so that valve can function properly.