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hy·dro·ceph·a·lus(hī′drō-sĕf′ə-ləs) also hy·dro·ceph·a·ly (-lē)
A usually congenital condition in which an abnormal accumulation of fluid in the cerebral ventricles causes enlargement of the skull and compression of the brain, destroying much of the neural tissue.
[New Latin, from Greek hudrokephalon : hudro-, hydro- + kephalē, head; see ghebh-el- in Indo-European roots.]
hy′dro·ce·phal′ic (-sə-făl′ĭk), hy′dro·ceph′a·loid′ (-loid′), hy′dro·ceph′a·lous (-ləs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.