二尖瓣 Traditional form: 二尖瓣 Pinyin (reading): èrjiānbàn Definitions: mitral valve (physiology) Characters: 二 - two; twice 尖 - sharp, pointed, acute; keen, shrewd 瓣 - petal; segment; valve Traditional characters: 二 - two; twice 尖 - sharp, pointed, acute; keen, shrewd 瓣 - petal; segment; valve