pia-arachnoidn.
/ˌpʌɪə(r)əˈraknɔɪd/, U.S. /ˌpaɪəəˈrækˌnɔɪd/; see also pia n.2 Anatomy.
The pia mater and the arachnoid (considered as a structural or functional unit with two layers). Frequently attributive.
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the world > life > the body > nervous system > cerebrospinal axis > [noun] > membranes > pia mater
pia matera1398
soft (also dear, mild, near) mothera1398
rind1585
godly mother1594
pia1877
pia-arachnoid1881
1881 Lancet 2 Apr. 527/1 They..are always attended by a thickened state of the pia-arachnoid membrane.
1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 111 The presence on the ental surface of the piarachnoid of a pial fold, the ruga.
1896 T. C. Allbutt et al. Syst. Med. I. 662 Acute inflammation of the pia-arachnoid.
1904 Brit. Med. Jrnl. 20 Aug. 371 An increase of pia-arachnoid fluid.
1949 H. W. C. Vines Green's Man. Pathol. (ed. 17) xxxviii. 1098 Sometimes portions of the convolutions, or even a whole lobe, may have entirely disappeared and the space be occupied by a serous fluid, enclosed by the thickened pia-arachnoid membrane.
1968 Brain 91 3 The pia-arachnoid was then incised and the medial and lateral edge of each pyramidal tract identified.
1984 M. J. Taussig Processes in Pathol. & Microbiol. (ed. 2) iv. 536 The whole of the pia-arachnoid system is inflamed.
2002 Neuroscience 115 42/2 The pia arachnoid vasculature was subsequently disrupted.
This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022).
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