|a congenital crack or fissure in the midline of the hard palate, often associated with a harelip|
cleft palate n.
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. Also called palatoschisis.
Incomplete closure of the palate during development of an embryo, resulting in a split along part or all of the roof of the mouth.