Source : Webster's Revised Unabridged Dictionary (1913)

Septomaxillary \Sep`to*max"il*la*ry\, a. (Anat.)
   Of or pertaining to the nasal septum and the maxilla;
   situated in the region of these parts. -- n. A small bone
   between the nasal septum and the maxilla in many reptiles and
   amphibians.