Sphenethmoid
Sphe*neth"moid\, a. [Sphenoid + 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.Sphenethmoid
Sphe*neth"moid\, n. (Anat.) The sphenethmoid bone.| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a chattering or flighty, light-headed person. |