What does hydrocephalus mean?
• HYDROCEPHALUS (noun) The noun HYDROCEPHALUS has 1 sense: 1. 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 Familiarity information: HYDROCEPHALUS used as a noun is very rare.