D defs.my
Entry 1 sense Webster, 1913

Hydrocephalus

/hīdˌ-rōs-ĕf'-əl-əs/ · Hy·dro·ceph·a·lus · IPA /hˌaɪdroʊsˈɛfələs/
01 n. An accumulation of liquid within the cavity of the cranium, especially within the ventricles of the brain; dropsy of the brain. It is due u…
  1. 1.
    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.(Med.)