maxillo-palatine

from The Century Dictionary.

• In anatomy, of or pertaining to the supramaxillary and palatine bones.
• noun In ornithology, a part of the superior maxillary bone which projects inward, forming a palatal process, which may or may not meet its fellow in the midline of the bony palate.

from the GNU version of the Collaborative International Dictionary of English.

• adjective (Anat.) Pertaining to the maxillary and palatine regions of the skull. Also used as n.