Definitions for "Prognathous"
Head and body axes are in line and the mouthparts are directed forwards (De Villiers, 1989).
Position of the head when the long axis is oriented horizontally and the mouthparts are directed anteriorly.
having forward pointing mouthparts
Having the jaws projecting beyond the upper part of the face; -- opposed to orthognathous. See Gnathic index, under Gnathic.
having a projecting lower jaw