hy·dro·ceph·a·lus (hī′drō-sĕfə-ləs) also 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.
[New Latin, from Greek hudrokephalon : hudro-, hydro- + kephalē, head; see ghebh-el- in the Appendix of Indo-European roots.]
hy′dro·ce·phalic (-sə-fălĭk), hy′dro·cepha·loid′ (-loid′), hy′dro·cepha·lous (-ləs) adj.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
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