mandibulofacial dysostosis
noun
man·di·bu·lo·fa·cial dysostosis
| \ man-ˌdib-yə-lō-ˌfā-shəl-
\
\
Medical Definition of mandibulofacial dysostosis
: a dysostosis of the face and lower jaw inherited as an autosomal dominant trait and characterized by bilateral malformations, deformities of the outer and middle ear, and a usually smaller lower jaw
— called also Treacher Collins syndrome