noun.
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.
The Century Dictionary and Cyclopedia
noun.
In pathology, an accumulation of serous fluid within the cranial cavity, either in the subdural space (external hydrocephalus) or in the ventricles (internal hydrocephalus).
noun.
[capitalized] In zoology, a genus of trilobites.
the GNU version of the Collaborative International Dictionary of English
noun.
An accumulation of liquid within the cavity of the cranium, especially within the ventricles of the brain; dropsy of the brain. It is due usually to tubercular meningitis. When it occurs in infancy, it often enlarges the head enormously.
noun.
(medicine) A usually congenitalcondition in which an abnormalaccumulation of fluid in the cerebralventricles causes enlargement of the skull and compression of the brain, destroying much of the neural tissue
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological
Word Usage
"Fetal hydrocephalus is also commonly associated with congenital malformation syndromes."