| hyomandibular | <anatomy> Pertaining both to the hyoidean arch and the mandible or lower jaw; as, the hyomandibular bone or cartilage, a segment of the hyoid arch which connects the lower jaw with the skull in fishes. The hyomandibular bone or cartilage. Origin: Hyo- + mandibular. Source: Websters Dictionary (01 Mar 1998) |
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| hyomandibular cleft | <anatomy> The cleft between the hyoid and mandibular arches of the embryo; the external auditory meatus is developed from its dorsal portion. Synonym: first visceral cleft. (05 Mar 2000) |