Similar words: cephalopod, electroencephalography, hydrogen, hydrothermal, hydrosphere, hydrometer, hydrophobe, hydrophobia. Meaning: [‚haɪdrəʊ'sefələs] 
n. 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.
n. 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. 
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61. It could signal normal pressure hydrocephalus, in which pockets in the brain swell with too much spinal fluid.
More similar words: cephalopod, electroencephalography, hydrogen, hydrothermal, hydrosphere, hydrometer, hydrophobe, hydrophobia, hydrodynamic, hydrogen bomb, hydroelectricity, hydrant, hydrate, hydraulic, dehydrate, dehydration, carbohydrate, elephant, elephantine, grocer, grocery, proceed, process, white elephant, elephantiasis, proceeds, procedure, triumphal, a white elephant, processor.