— orthognathism /awr thog"neuh thiz'euhm/ , orthognathy , n.
/awr thog"neuh theuhs/ , adj. Craniom.
straight-jawed; having the profile of the face vertical or nearly so; having a gnathic index below 98.
Also, orthognathic /awr'theuhg nath"ik, -thog-/ .
[ 1850-55; ORTHO- + -GNATHOUS ]