/an"jee euh plas'tee/ , n. , pl. angioplasties . Surg.
the repair of a blood vessel, as by inserting a balloon-tipped catheter to unclog it or by replacing part of the vessel with either a piece of the patient's own tissue or a prosthetic device: coronary angioplasty to widen an artery blocked by plaque.
[ ANGIO- + -PLASTY ]