"Sphenoidal" is a word in ENGLISH

Pertaining to or forming the wing of the sphenoid; relating to a bone in the base of the skull, which …

Of or pertaining to that part of the base of the cranium between the basioccipital and the presphenoid, which usually …

Pertaining to a small Wormian bone sometimes present in the human skull between the parietal and the great wing of …

Of or pertaining to the sphenoid bone and the orbit, or to the orbitosphenoid bone.

Of or pertaining to the posterior part of the sphenoid bone.

Situated in front of the sphenoid bone; of or pertaining to the anterior part of the sphenoid bone (i. e., …

Of, pertaining to, or in the region of, the pterygoid bones, pterygoid processes, or the whole sphenoid bone.

Of or pertaining to both the sphenoidal and the ethmoidal regions of the skull, or the sphenethmoid bone; sphenethmoidal.

Of or pertaining to the sphenoid bone.