pterionn.
/ˈptɛrɪən/, U.S. /ˈptɛriən/ Physical Anthropology and Anatomy.
The region of the side of the skull where the sutures between the sphenoid, parietal, frontal, and temporal bones are located, typically arranged in a pattern resembling the letter H.
ΘΚΠ
the world > life > the body > structural parts > joint > joints > [noun] > joints of skull
commissure?a1425
lambdac1475
sagittal suture (addition, commissure)?1541
coronal suture1543
sagit?1550
garland-seam1576
commissary1577
agglutination1578
skull-seam1605
lambdoidal suture (commissure)1653
transverse suture1741
orbitar1782
pterion1878
1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. ii. 234 Pterion [Fr. ptéréon (sic)],..the region where the frontal, parietal, temporal, and sphenoid bones meet, in the form of an H.
1899 T. C. Allbutt et al. Syst. Med. VIII. 168 The seat [of temporal headache] is about opposite the pterion on each side.
1921 Biometrika 13 253 A feature that has been frequently noted..is the existence of a depression slightly above the region of the pterion, called the Sylvian depression.
1980 Gray's Anat. (ed. 36) iii. 325/1 The tip of the greater wing [of the sphenoid bone]..articulates with the sphenoidal angle of the parietal bone at the pterion.
2005 Brit. Jrnl. Plastic Surg. 58 197/1 Craniectomies were performed at the pterion and the greater wings of sphenoid bones were resected with rongeurs when a constriction ring was observed.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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n.1878