Source : Webster's Revised Unabridged Dictionary (1913)

Palatopterygoid \Pal`a*top*ter"y*goid\, a. [Palato- +
   pterygoid.] (Anat.)
   Pertaining to the palatine and pterygoid region of the skull;
   as, the palatopterygoid cartilage, or rod, from which the
   palatine and pterygoid bones are developed.