pia-aˈrachnoid, piaˈrachnoid Anat.
[f. pia1 + arachnoid.]
The pia mater and the arachnoid, considered as one structure. Also attrib.
| 1889 Buck's Handbk. Med. Sc. VIII. 111 The presence on the ental surface of the piarachnoid of a pial fold, the ruga. 1896 Allbutt's Syst. Med. I. 662 Acute inflammation of the pia-arachnoid. 1904 Brit. Med. Jrnl. 20 Aug. 371 An increase of pia-arachnoid fluid. |