has part has part has_part characteristic of has modifier submucous cleft palate cleft soft palate submucous cleft soft palate MP:0013547 a cleft of the soft palate which is characterized by a midline deficiency or lack of muscular tissue and incorrect positioning of the muscles, but cleft is covered over by the mucous membrane of the roof of the mouth; frequently associated with a bifid or cleft uvula abnormal closure incomplete palatal muscle