mitral valve
noun [ C usually singular ] anatomy specialized uk/ˈmaɪ.trəl ˌvælv/ us/ˈmaɪ.trəl ˌvælv/
二尖瓣（心脏内部不断开关的瓣膜结构，可阻止血液从左心室回流到左心房）
the valve (= a structure that opens and closes) in the heart that stops blood from returning into the left atrium (= upper space) from the left ventricle (= lower space)
Synonym: bicuspid valve
Compare: tricuspid valve
See also: valve