Basisphenoid
Basisphenoid ({not transcribed}) , adjective
[Basi- + sphenoid.]
(Anatomy) 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.
Also: Basisphenoidal
Basisphenoid , noun
(Anatomy) The basisphenoid bone.