obelionn.

1878 R. T. H. Bartley tr. P. Topinard Anthropol. ii. ii. 234 Obelion..the region situated between the two parietal foramina, where the sagittal suture becomes simple, which is generally at its fourth posterior fifth.

1892 New Sydenham Soc. Lexicon Obelion, the point of a line stretching between the two parietal foramina where the sagittal suture becomes simple and where its closure generally commences, about four fifths of its length from the front of the suture.

1913 Cunningham's Text-bk. Anat. (ed. 4) 171 Placed medially between the two parietal bones is the sagittal suture. This is finely denticulated, except in the region of the obelion.

1938 Biometrika 30 131 The greater part of the vault was affected by a pathological condition, the ectocranial surface being rugose and in places exceptionally thin, especially at the obelion.

1958 Man 58 175/1 Because of the obliteration of the sutures and absence of parietal foramina, obelion is difficult to locate.

1986 A. Ghosh Circle of Reason I. i. 20 Nor, in Bhudeb Roy's youth, were those bits of his skull immediately over and outside the obelion as distended and hideous as they were to become later.