Pronunciation IPA (key): /ˈɛpɪlɛpsi/ Audio (UK)(file) Audio (US)(file) Hyphenation: ep‧i‧lep‧sy Noun Singular epilepsy Plural epilepsies (countable & uncountable) (pathology) Epilepsy is a medical condition in which a person experiences seizures and blackouts.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads