Ba`si*sphe"noid (?), Ba`si*sphe*noid"al (?), a. [Basi- + spheroid.] 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.
© Webster 1913.