cleft palate

cleft-palate的词性：
n.（名词）

1. A congenital fissure in the roof of the mouth, resulting from incomplete fusion of the palate during embryonic development. It may involve only the uvula or extend through the entire palate.
颚裂，兔唇：上唇的一道天生的裂缝，是由于胚胎发育时上颚的不完整结合所导致的。颚裂可能仅牵涉到小舌，也可能延伸到整个上颚