arachnoid

3 ENTRIES FOUND:

1arach·noid

adj \ə-ˈrak-ˌnid\

Definition of ARACHNOID

1
: of or relating to a thin membrane of the brain and spinal cord that lies between the dura mater and the pia mater
2
: covered with or composed of soft loose hairs or fibers

First Known Use of ARACHNOID

1789

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