mandibular protraction
Also found in: Dictionary, Thesaurus.
man·dib·u·lar pro·trac·tion
a type of facial anomaly in which the gnathion lies anterior to the orbital plane.
man·dib·u·lar pro·trac·tion
(man-dibyū-lăr prō-trakshŭn)Facial anomaly in which the gnathion lies anterior to orbital plane.