commissurotomy

詳細解釋：

com.mis.sur.ot.o.my

n.（名詞）
【複數】 com.mis.sur.ot.o.mies
Surgical incision of a commissure in the body, as one made in the heart to relieve constriction of the mitral valve or one made in the brain to treat certain psychiatric disorders.
連合部切開術：身體內連合部的外科切開術，如在心臟作的減輕二尖瓣瓣膜限制或在腦中作的處理某些精神失調的手術

來源：
commissur(e)
commissur(e)
-tomy
-tomy