brain sand

noun
\ -ˌsand How to pronounce brain sand (audio) \

Medical Definition of brain sand

: small grains of calcareous matter in the brain (as in the pineal gland) that occur especially in association with aging

called also acervulus, acervulus cerebri

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Cite this Entry

“Brain sand.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/brain%20sand. Accessed 24 Sep. 2020.

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