brain sand

Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to brain sand: pineal gland


material occurring in fine gritty particles.
brain sand sandy matter about the pineal gland and other parts of the brain.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

cor·'po·ra ar·e·na·'ce·a

small calcareous concretions in the stroma of the pineal and other central nervous system tissues.
Farlex Partner Medical Dictionary © Farlex 2012

brain sand

X-ray opaque calcified granules in the pineal gland commonly present in adult life. The condition is harmless and may prove clinically useful as it may demonstrate shifting of the pineal to one side as a result of a space-occupying condition on the other. Also known as acervulus cerebri.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005