口こう唇しん裂れつ

noun

cleft lip

Medical term for a congenital split in the upper lip. In everyday contexts, 口唇口蓋裂 (cleft lip and palate) or 兎唇 (rare, potentially offensive) may be encountered.

• 口こう唇しん裂れつは、胎たい児じ期きに上うわ唇くちびるが正せい常じょうに形けい成せいされない先せん天てん異い常じょうです。

  Cleft lip is a congenital anomaly in which the upper lip does not form properly during the fetal period.