EPIDEICTIC
epideictic, epideictical
(adjective) designed primarily for rhetorical display; “epideictic orations”
Source: WordNet® 3.1
Adjective
epideictic (comparative more epideictic, superlative most epideictic)
Of or pertaining to rhetoric of ceremony, declamation, and demonstration, most often the rhetoric of funerals and other formal events. One of the three branches, or "species" (eidē), of rhetoric as outlined by Aristotle.
Source: Wiktionary
Ep`i*deic"tic, a. Etym: [Gr. Epidictic.]
Definition: Serving to show forth, explain, or exhibit; -- applied by the
Greeks to a kind of oratory, which, by full amplification, seeks to
persuade.
Source: Webster’s Unabridged Dictionary 1913 Edition