cleft jaw

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jaw

 [jaw]
either the mandible (lower jaw) or the maxilla (upper jaw), two opposing bony structures of the mouth of a vertebrate; they bear the teeth and are used for seizing prey, for biting, or for masticating food. See anatomic Table of Bones in the Appendices.
cleft jaw a cleft between the median nasal and maxillary processes through the alveolus; see also cleft palate. Called also gnathoschisis.
Hapsburg jaw a mandible that is prognathous, often accompanied by Hapsburg lip. See illustration.
Hapsburg jaw with Hapsburg lip.
phossy jaw phosphonecrosis.

cleft jaw

a congenital facial anomaly of the jaw resulting from failure of fusion of the mandibular prominences.
Synonym(s): gnathoschisis

cleft jaw

an abnormal jaw resulting from failure of the left and right mandibles to fuse properly during embryonic development.

cleft jaw

(kleft jaw)
Congenital jaw anomaly resulting from failure of fusion of the mandibular prominences.
Synonym(s): gnathoschisis.
References in periodicals archive ?
And there's the worryingly attractive but maybe villainous head gardener Seth Greenwood, with eyes a "cool green of good jade", floppy raven black hair, straight nose and cleft chin - more than enough to give a 40-something girl some romantic ideas.
If you've got a cleft chin like Russell, a beard can hide a multitude of sins.
MICHAEL DOUGLASLOOKS: Cleft chin, strong jaw and good head of hair.
The story of Issur Danielovitch Demsky, who was born in 1916 to poor Russian Jewish immigrants, pointed his cleft chin at the stars and ascended ever upwards.
After a rugby career which saw him go down in history as England's most successful captain of all time, Carling - dubbed Old Bumface by his team-mates because of his cleft chin - retired from the game last January.