Sphenethmoid /(?)/

Sphe·neth·moid

Sphenethmoid

a.
  1. Of or pertaining to both the sphenoidal and the ethmoidal regions of the skull, or the sphenethmoid bone; sphenethmoidal. (Anat.)

Phrases & Compounds
Sphenethmoid bone
a bone of the skull which surrounds the anterior end of the brain in many amphibia; the girdle bone.

Sphenethmoid

n.
  1. The sphenethmoid bone. (Anat.)