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hydranencephaly

[hī′drăn-ən-sĕf′ə-lē]

n.

The congenital absence of the cerebral hemispheres in which the space in the cranium that they normally occupy is filled with fluid.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.