arachnoid

arachnoid

arachnoid (arachnoid mater) (ă-rak-noid) n. the middle of the three membranes covering the brain and spinal cord (see meninges), which has a fine, almost cobweb-like, texture. a. villi thin-walled projections of the arachnoid into the blood-filled sinuses of the dura, through which cerebrospinal fluid flows from the subarachnoid space into the bloodstream. Large villi (Pacchionian bodies) are found in the region of the superior sagittal sinus.

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"arachnoid." A Dictionary of Nursing. 2008. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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arachnoid

arachnoid A cobweb‐shaped landform on Venus showing radiating lineaments centred on a volcanic dome and surrounded by concentric ridges or fractures. Arachnoids are up to 150 km in diameter and occur mostly in two lowland regions of Venus, Sedna Planitia and Ganiki Planitia. Other sparse groupings are known.

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"arachnoid." A Dictionary of Astronomy. 1997. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"arachnoid." A Dictionary of Astronomy. 1997. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O80-arachnoid.html

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arachnoid

a·rach·noid / əˈrakˌnoid/ • adj. like a spider or arachnid. • n. (also arachnoid membrane or arachnoid mater) Anat. a fine, delicate membrane, the middle one of the three membranes or meninges that surround the brain and spinal cord.

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"arachnoid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"arachnoid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O999-arachnoid.html

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arachnoid

arachnoid Resembling a spider's web (spiders belong to the class Arachnida).

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MICHAEL ALLABY. "arachnoid." A Dictionary of Ecology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "arachnoid." A Dictionary of Ecology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O14-arachnoid.html

MICHAEL ALLABY. "arachnoid." A Dictionary of Ecology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-arachnoid.html

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arachnoid

arachnoid Resembling a spider's web (spiders belong to the class Arachnida).

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MICHAEL ALLABY. "arachnoid." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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arachnoid

arachnoid Resembling a spider's web.

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MICHAEL ALLABY. "arachnoid." A Dictionary of Zoology. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

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arachnoid

arachnoidavoid, Boyd, Coed, droid, Floyd, Freud, Lloyd, overjoyed, self-employed, unalloyed, underemployed, unemployed, void •geoid • amoeboid (US ameboid) •globoid • cuboid • gadoid • typhoid •fungoid • discoid • tabloid • colloid •celluloid • mongoloid • alkaloid •coralloid • crystalloid • prismoid •arachnoid • sphenoid • hominoid •crinoid, echinoid •solenoid • humanoid • paranoid •hypoid • anthropoid • gabbroid •android • steroid • thyroid • hydroid •spheroid • meteoroid • Murgatroyd •Polaroid •haemorrhoid (US hemorrhoid) •asteroid • schizoid • factoid • mastoid •deltoid • planetoid • ovoid • trapezoid •rhizoid

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"arachnoid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

"arachnoid." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O233-arachnoid.html

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