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arachnoid

arachnoid is defined in Webster's Unabridged Dictionary (1913) with 4 senses. The full text of each entry is reproduced verbatim below.

Definitions

  1. 1.(Anat.) Pertaining to a thin membrane of the brain and spinal cord, between the dura mater and pia mater.
  2. 2.(Bot.) Covered with, or composed of, soft, loose hairs or fibers, so as to resemble a cobweb; cobwebby.
  3. 3.(Anat.) The arachnoid membrane.
  4. 4.(Zoöl.) One of the Arachnoidea.

Source: Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).

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