- (a.) Wedge-shaped; as, a sphenoid crystal.
- (n.) A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid.
- (a.) Of or pertaining to the sphenoid bone.
- (n.) The sphenoid bone.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sphenoid. Retrieved September 22, 2026, from http://smartdefine.org/sphenoid/definitions/2064795 |
| Chicago | Webster's. 2011. "sphenoid" http://smartdefine.org/sphenoid/definitions/2064795 (accessed September 22, 2026). |
| Harvard | Webster's 2011, sphenoid, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/sphenoid/definitions/2064795>. |
| MLA | Webster's. "sphenoid" 28 May 2011. Web. 22 September 2026. <http://smartdefine.org/sphenoid/definitions/2064795> |