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arachnoid granulation

arachnoid granulation in Medicine

arachnoid granulation n.
Any of numerous villuslike projections of the cranial arachnoid through the dura into the superior sagittal sinus or into its lateral venous lacunae. Also called arachnoid villus, pacchionian body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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