[hahy-druh-sef-uh-luh s] /ˌhaɪ drəˈsɛf ə ləs/
an accumulation of serous fluid within the cranium, especially in infancy, due to obstruction of the movement of cerebrospinal fluid, often causing great enlargement of the head; water on the brain.
accumulation of cerebrospinal fluid within the ventricles of the brain because its normal outlet has been blocked by congenital malformation or disease. In infancy it usually results in great enlargement of the head Nontechnical name water on the brain
1660s, medical Latin, from Greek hydro- “water” (see water (n.1)) + kephale “head” (see cephalo-). Related: Hydrocephalic; hydrocephalous.
hydrocephalus hy·dro·ceph·a·lus (hī’drō-sěf’ə-ləs) or hy·dro·ceph·a·ly (-lē)
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.
hy’dro·ce·phal’ic (-sə-fāl’ĭk) or hy’dro·ceph’a·loid’ adj.
hydrocephalus (hī’drō-sěf’ə-ləs) also hydrocephaly
A usually congenital condition in which an abnormal accumulation of cerebrospinal fluid in the cerebral ventricles causes enlargement of the skull and compression of and injury to brain tissue. If hydrocephalus becomes progressive, a shunt is surgically placed to reduce pressure by conducting fluid away from the brain, usually to the peritoneum.
hydrocephalic adjective (hī’drō-sə-fāl’ĭk)
noun 1. a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes. /ˌhaɪdrəˈklɒrɪk/ noun 1. the colourless or slightly yellow aqueous solution of hydrogen chloride: a strong acid used in many industrial and laboratory processes Formerly called muriatic acid hydrochloric acid hy·dro·chlo·ric acid (hī’drə-klôr’ĭk) n. A clear, colorless, fuming, […]
[hahy-druh-klawr-ik, -klohr-] /ˌhaɪ drəˈklɔr ɪk, -ˈkloʊr-/ adjective 1. of or derived from . adj. 1817, in hydrochloric acid (proposed 1814 by Gay-Lussac); see hydro- + chloric (see chlorine).
[hahy-druh-klawr-ahyd, -id, -klohr-] /ˌhaɪ drəˈklɔr aɪd, -ɪd, -ˈkloʊr-/ noun 1. a salt, especially of an alkaloid, formed by the direct union of hydrochloric acid with an organic base that makes the organic constituent more soluble. /ˌhaɪdrəˈklɔːraɪd/ noun 1. a quaternary salt formed by the addition of hydrochloric acid to an organic base, such as aniline […]
[hahy-druh-klawr-uh-thahy-uh-zahyd, -klohr-] /ˌhaɪ drəˌklɔr əˈθaɪ əˌzaɪd, -ˈkloʊr-/ noun, Pharmacology. 1. a crystalline, water-insoluble powder, C 7 H 8 ClN 3 O 4 S 2 , used as a diuretic and in the treatment of hypertension.