- the craniometric point at the side of the sphenoidal fontanelle.
Origin of pterion
1875–80; < New Latin, alteration of Greek pterón wing, on model of inion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- The junction of the greater wing of the sphenoid bone and the squamous temporal, the frontal, and the parietal bones.