You searched for: “piarachnoid”
piarachnoid (s) (noun) (no pl)
The two delicate layers of the meninges: The arachnoid mater and pia mater, considered as one unit, comprise the piarachnoid.
This entry is located in the following units: arachno-, arachn- + (page 3) -oid, -oidal, -oidism, -odic (page 16)