encephalolith

[ ĕn-sĕfə-lō-lĭth′ ]

n.

A concretion in the brain or in one of its ventricles.cerebral calculus
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.