from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Situated or occurring beneath the arachnoid membrane, or between the arachnoid and the pia mater.

from The Century Dictionary.

  • Situated beneath the arachnoid—that is, between that membrane and the pia mater: as, the subarachnoid space.
  • Subdural.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective (Anat.) Situated under the arachnoid membrane.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective medicine Located or occurring below the arachnoid mater, often specifically between the arachnoid membrane and the pia mater


from Wiktionary, Creative Commons Attribution/Share-Alike License

sub- +‎ arachnoid



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