hydrocephalus Meaning, Definition & Usage

  1. 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
    hydrocephaly.

WordNet

Hy`dro*ceph"a*lus noun
Etymology
NL., fr. Gr. hydrocephalus; "y`dwr water + head.
Definitions
  1. (Med.) 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.

Webster 1913