Meckelian :: Meckelian (a.) Pertaining to, or discovered by, J. F. Meckel, a German anatomist..
Mentomeckelian :: Mentomeckelian (a.) Of or pertaining to the chin and lower jaw.
Mentomeckelian :: Mentomeckelian (n.) The bone or cartilage forming the anterior extremity of the lower jaw in some adult animals and the young of others.