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Webster 1913 Edition
Orthognathous
Or-thog′na-thous
,Adj.
[
Ortho-
+ Gr. γνάθοσ
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
.