/sfee"noyd/ , adj. Also, sphenoidal .
1. wedge-shaped.
2. Anat. of or pertaining to the compound bone of the base of the skull, at the roof of the pharynx. See diag. under skull .
n.
3. Anat. the sphenoid bone.
[ 1725-35; sphenoides sphenoeidés. See SPHEN-, -OID ]