Cleft palate: An opening in the roof of the mouth due to a failure of the palatal shelves to come fully together from either side of the mouth and fuse during the first months of development as an embryo. The opening in the palate permits communication between the nasal passages and the mouth. Surgery is needed to close the palate. Cleft palate can occur alone or in association with cleft lip.
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Reviewed on 12/27/2018