\Al`i*sphe"noid\, Alisphenoidal \Al`i*sphe*noid"al\,
a. [L. ala wing + E. sphenoid.] (Anat.)
Pertaining to or forming the wing of the sphenoid; relating
to a bone in the base of the skull, which in the adult is
often consolidated with the sphenoid; as, alisphenoid bone;
alisphenoid canal.

\Al`i*sphe"noid\, n. (Anat.)
The alisphenoid bone.