mesiognathic

me·si·o·gnath·ic

(mē'zē-ō-nath'ik),
Denoting malposition of one or both jaws forward from their normal position.

me·si·o·gnath·ic

(mē'zē-ōg-nath'ik)
Denoting malposition of one or both jaws in a more forward position than normal.