ĕpĭdīctĭcus, a, um, adj., = ἐπιδεικτικός,
for display , declamatory : in illo epidictico genere, quod diximus proprium sophistarum, Cic. Or. 13, 42 (written as Greek, id. ib. 11, 37; 61, 207).
epidīcticus adj. , ἐπιδεικτικός, for display, declamatory: genus (dicendi). ...
An Elementary Latin Dictionary