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The principal mandibular bone; the mandible. Mandibular arch (Anat.), the most anterior visceral arch, -- that in which the mandible is developed.

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. -- n.

Between the mandibles; interramal; as, the intermandibular space.

Pertaining to the maxilla and mandible; as, the maxillo- mandibular nerve.

Having the mandibular arch articulated with the hyoid arch and the cranium, as in the cestraciont sharks; -- said of a skull.

Having the mandibular arch articulated directly to the cranium, as in the skulls of the Amphibia.

The keel or lower outline of a bird's bill, so far as the mandibular rami are united.

natomy, and generally denoting connection with the hyoid bone or arch; as, hyoglossal, hyomandibular, hyomental, etc.

Having the mandible suspended by the hyomandibular, or upper part of the hyoid arch, as in fishes, instead of directly articulated with the skull as in mammals; -- said of the skull.

Between rami or branches; esp., between the mandibles, or rami of the lower jaw; intermandibular.

Pertaining both to the mandibular and the hyoid arch, or situated between them.

ns attached to the mouth organs of insects, arachnids, crustaceans, and annelids; as, the mandibular palpi, maxillary palpi, and labial palpi. The palpi of male spiders serve as sexual organs. Called also palp. See Illust. of Arthrogastra and Orthoptera.

Anything which suspends or holds up a part: especially, the mandibular suspensorium (a series of bones, or of cartilages representing them) which connects the base of the lower jaw with the skull in most vertebrates below mammals.

Plaiting or joining together; -- said of a bone next above the quadrate in the mandibular suspensorium of many fishes, which unites together the other bones of the suspensorium. -- n.