Definition of diabolization in English:
diabolization
(also diabolisation)
noun dʌɪˌabəlʌɪˈzeɪʃndʌɪˌab(ə)lʌɪˈzeɪʃn
The action of "diabolize"; an instance of this. Also: the action or process of turning someone into a devil or becoming like a devil.
Origin
Early 18th century. From diabolize + -ation.