porionn.
/ˈpɔːrɪən/, /ˈpɔːrɪɒn/, U.S. /ˈpɔriˌɑn/ Physical Anthropology.
1. The midpoint of the posterior margin of the incisive foramen (the opening of the nasopalatine canal in the roof of the mouth behind the incisor teeth). rare. disused.
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the world > life > the body > sense organ > hearing organ > parts of hearing organ > [noun] > other parts
otocony1835
otoconium1838
mediastinum auris1848
porion1909
otolith organ1919
otolithic membrane1932
stereo-cilium1933
1909 Cent. Dict. Suppl. Porion, in craniom[etry], the median point at the posterior border of the canalis incisivus.
2. The uppermost point of the margin of the external auditory meatus.
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the world > life > the body > sense organ > hearing organ > parts of hearing organ > [noun] > canals
burr1573
meatus1615
scala1712
Fallopian canal1877
external auditory meatus1893
porion1916
auditory meatus1920
1916 Amer. Anthropologist 18 408 (caption) Porion.
1920 H. H. Wilder Lab. Man. Anthropometry 47 Porion, the uppermost point in the margin of the auditory meatus.
1937 Amer. Jrnl. Physical Anthropol. 22 485 Porion, a point on the upper margin of the external auditory meatus which according to Martin is vertically over the middle of the meatus, and according to Wilder is simply the uppermost point.
1970 Monogr. Soc. Res. Child Devel. 35 iii. 48 As a rule, the two poria are instrumentally determined by contact of the upper margin of the rounded ear rods of the headspanner as they are inserted into the S's external auditory meatus.
2004 W. H. Kimbel et al. Skull of Australopithecus Afarensis 18 This correction will also have the positive effect of elevating the left porion exactly the amount needed to bring it to the correct level of porion on the undeformed right side.
This entry has been updated (OED Third Edition, December 2006; most recently modified version published online March 2022).
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n.1909