adjective, Also, sphenoidal
being in the shape of a wedge; wedge-shaped.
Anatomy. of or relating to the compound bone of the base of the skull, at the roof of the pharynx.
Anatomy. the sphenoid bone.
of or relating to the sphenoid bone
See sphenoid bone
sphenoid sphe·noid (sfē’noid’)
The sphenoid bone. adj.
Of or relating to the sphenoid bone.
sphe·noi’dal (-noid’l) adj.
- Sphenoidal sinus
sphenoidal sinus n. Either of a pair of cavities in the body of the sphenoid bone that communicate with the nasal cavity.
- Sphenoidal spine
sphenoidal spine n. A rearward and downward projection from either of the greater wings of the sphenoid bone. Also called alar spine, spinous process.
- Sphenoid bone
noun 1. the large butterfly-shaped compound bone at the base of the skull, containing a protective depression for the pituitary gland sphenoid bone n. A compound bone with winglike processes, situated at the base of the skull.
- Sphenoid crest
sphenoid crest n. A vertical ridge in the midline of the anterior surface of the sphenoid bone.