Webster's Revised Unabridged Dictionary · 1913

Sphenethmoid

Sphenethmoid , adjective

[Sphenoid + ethmoid.]

(Anatomy) Of or pertaining to both the sphenoidal and the ethmoidal regions of the skull, or the sphenethmoid bone; sphenethmoidal.
Collocations (1)
Sphenethmoid bone (Anatomy) , a bone of the skull which surrounds the anterior end of the brain in many amphibia; the girdle bone.

Sphenethmoid , noun

(Anatomy) The sphenethmoid bone.