Definify.com
Webster 1913 Edition
Sphenethmoid
Sphe-neth′moid
,Adj.
[
Sphen
oid + ethmoid
.] (Anat.)
Of or pertaining to both the sphenoidal and the ethmoidal regions of the skull, or the sphenethmoid bone; sphenethmoidal.
Sphenethmoid bone
(Anat.)
, a bone of the skull which surrounds the anterior end of the brain in many amphibia; the girdle bone.
Sphe-neth′moid
,Noun.
(Anat.)
The sphenethmoid bone.