(n) a type of oratory used to eulogize or condemn a person or group of people, Example:Pericles' funeral oration for Athenians killed in the Peloponnesian War is a famous example of epideictic oratory
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
a. [ Gr. &unr_;, fr. &unr_; to show forth, display; 'epi` + &unr_; to show. Cf. Epidictic. ] Serving to show forth, explain, or exhibit; -- applied by the Greeks to a kind of oratory, which, by full amplification, seeks to persuade.