aortic root surgery
noun [ U or C ] medical specialized uk/eɪˌɔː.tɪk ˈruːt ˌsɜː.dʒər.i/ us/eɪˌɔːr.t̬ɪk ˈruːt ˌsɝː.dʒər.i/
主动脉根部瘤手术
an operation to treat an aortic aneurysm (= a dangerous swelling of the wall of the aorta) at a point where the aorta leaves the heart