Basisphenoid

{ Ba′si‐sphe″noid (�), Ba′si‐sphe‐noid″al (�), } a. [Basi- + sphenoid.] (Anat.) Of or pertaining to that part of the base of the cranium between the basioccipital and the presphenoid, which usually ossifies separately in the embryo or in the young, and becomes a part of the sphenoid in the adult.