{ Al`i*sphe"noid (&?;), 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.