The Collaborative International Dictionary
Orthognathous
Orthognathous \Or*thog"na*thous\, a. [Ortho- + Gr. gna`qos the jaw.] (Anat.) Having the front of the head, or the skull, nearly perpendicular, not retreating backwards above the jaws; -- opposed to prognathous. See Gnathic index, under Gnathic.
Wiktionary
orthognathous
a. (context anatomy English) straight-jawed
Usage examples of "orthognathous".
Contrast it with this orthognathous specimen, with its perpendicular profile.