|a congenital split in the upper lip, often associated with a cleft palate|
|Preferred form cleft lip a congenital cleft or fissure in the midline of the upper lip, resembling the cleft upper lip of a hare, often occurring with cleft palate|
cleft lip n.
A congenital facial deformity of the lip, usually the upper lip, due to a mesodermal deficiency or to a failure of merging in one or more of the embryologic processes that form the lip; it is frequently associated with cleft tooth socket and cleft palate. Also called cheiloschisis, harelip.
|cleft lip (klěft) Pronunciation Key
A congenital deformity characterized by a vertical cleft or pair of clefts in the upper lip, with or without involvement of the palate.