from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The point corresponding with the posterior end of the sphenoparietal suture; known as the weakest part of the skull.
from The Century Dictionary and Cyclopedia
- n. In craniometry, the region where the frontal, squamosal, parietal, and sphenoid bones meet or approach one another.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the craniometric point in the region of the sphenoid fontanelle
From French ptérion, from ptère ("wing of the sphenoid bone"), from Ancient Greek πτερόν (pteron, "wing"). (Wiktionary)