hyomandibular cleft


Also found in: Encyclopedia.

hy·o·man·dib·u·lar cleft

the cleft between the hyoid (second) and mandibular (first) pharyngeal arches of the embryo; the external acoustic meatus is developed from its dorsal portion.
Synonym(s): first pharyngeal groove, first visceral cleft

hy·o·man·dib·u·lar cleft

(hīō-man-dibyū-lăr kleft)
Cleft between the hyoid (second) and mandibular (first) pharyngeal arches of the embryo; external acoustic meatus is developed from its dorsal portion.
Synonym(s): first pharyngeal groove, first visceral cleft.