arachnoid membrane

noun
the middle of the 3 meninges
Syn: ↑arachnoid
Hypernyms: ↑meninx, ↑meninges
Part Holonyms: ↑leptomeninges

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arachnoid membrane noun (anatomy and zoology)
One of the three coverings of the brain and spinal cord, between the dura mater and pia mater, non-vascular, transparent and thin
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Main Entry:Arachnida

Useful english dictionary. 2012.

Look at other dictionaries:

  • arachnoid membrane — arachnoidea …   Medical dictionary

  • arachnoid villus — n ARACHNOID GRANULATION * * * one of the thin walled projections outwards of the arachnoid membrane into the blood filled sinuses of the dura, acting as a one way valve for the flow of cerebrospinal fluid from the subarachnoid space into the… …   Medical dictionary

  • arachnoid granulation — n any of the small whitish processes that are enlarged villi of the arachnoid membrane of the brain which protrude into the superior sagittal sinus and into depressions in the neighboring bone called also arachnoid villus, pacchionian body …   Medical dictionary

  • Arachnoid — A*rach noid, n. 1. (Anat.) The arachnoid membrane. [1913 Webster] 2. (Zo[ o]l.) One of the Arachnoidea. [1913 Webster] …   The Collaborative International Dictionary of English

  • arachnoid — [ə rak′noid΄] adj. [ModL arachnoides < Gr arachnoeidēs, like a cobweb < arachnē, spider (see ARACHNID) + eidēs, OID] 1. Anat. designating the middle of three membranes covering the brain and the spinal cord: see DURA MATER, PIA MATER 2. Bot …   English World dictionary

  • Arachnoid cyst — Infobox Disease Name = Arachnoid cyst Caption = DiseasesDB = 33219 ICD10 = ICD10|Q|04|6|q|00 ICD9 = ICD9|348.0 ICDO = OMIM = 207790 MedlinePlus = eMedicineSubj = radio eMedicineTopic = 48 MeshName = Cyst,Arachnoid MeshNumber = D016080 Arachnoid… …   Wikipedia

  • arachnoid — SYN: a. mater. [G. arachne, spider, cobweb, + eidos, resemblance] a. of brain SYN: cranial a. mater. cranial a. mater [TA] that portion of the a. that lies within the cranial cavity and surrounds the …   Medical dictionary

  • arachnoid — I. adjective Date: 1789 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 II. noun Etymology: New Latin arachnoides, from …   New Collegiate Dictionary

  • arachnoid — /euh rak noyd/, adj. 1. resembling a spider s web. 2. of or belonging to the arachnids. 3. Anat. of or pertaining to the arachnoid membrane. 4. Bot. formed of or covered with long, delicate hairs or fibers. n. 5. an arachnid. 6. Anat. the serous… …   Universalium

  • arachnoid — [ə raknɔɪd] adjective like a spider or arachnid. noun (also arachnoid membrane) Anatomy the fine middle membrane of the three surrounding the brain and spinal cord, situated between the dura mater and the pia mater. Origin C18: from mod. L.… …   English new terms dictionary

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