arachnoid granulation

noun

Medical Definition of arachnoid granulation

: 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

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Cite this Entry

“Arachnoid granulation.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/arachnoid%20granulation. Accessed 24 Oct. 2020.

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