Webster's Revised Unabridged Dictionary · 1913

Hyomandibular

Hyomandibular , adjective

[Hyo- + mandibular.]

(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.
(Anatomy) The hyomandibular bone or cartilage.