Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Sphenoid bone
Medically reviewed by Min Clinic Staff | Updated: January 2026
Sphenoid bone: A prominent, irregular, wedge-shaped bone at the base of the skull. The sphenoid bone has been called the 'keystone' of the cranial floor because it is in contact with all of the other cranial bones.