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Webster's New World College Dictionary » epilepsy
epilepsy
epilepsy definition
epi·lepsy (ep′ə lep′sē)
noun
a recurrent disorder of the nervous system, characterized by seizures of excessive brain activity which cause mental and physical dysfunction, as convulsions, unconsciousness, etc.
Etymology: OFr epilepsie < LL epilepsia < Gr epilēpsia, epilēpsis, lit., a seizure, hence epilepsy < epilambanein, to seize upon < epi-, upon + lambanein, to seize: see latch
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