Mid 17th century; earliest use found in James Hart (d. 1639), physician. From anti- + epileptical, after post-classical Latin antepilepticus antiepileptic.
Definition of antiepileptical in US English:
antiepileptical
adjectiveˌantɪɛpɪˈlɛptɪkl
Medicine rare
Antiepileptic.
Origin
Mid 17th century; earliest use found in James Hart (d. 1639), physician. From anti- + epileptical, after post-classical Latin antepilepticus antiepileptic.