a.1.(Anat.) Of or pertaining to the chin and lower jaw.
References in periodicals archive ?
Fangs in lower jaw: 0--absent; 1--forming a plate of dentary; 2--a spur-like projection formed by dentary and mentomeckelian bones.
Mentomeckelian bone: 0--absent; 1--distinct from dentary; 2--fused to dentary.
The geniohyoideus medialis is, throughout its length, about half the width of the geniohyoideus lateralis at mid throat, at the level of the episternum it is one-third the width of this structure; the geniohyoideus lateralis arises from the mandible next to the attachment of the submentalis and at mid-throat occupies almost one-half of the area between the geniohyoideus medialis and the mentomeckelian bone, it widens from rostrum towards intermandibular region.