brain sand

noun

: 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 15 Jun. 2024.

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