protreptic

noun

pro·​trep·​tic prō-ˈtrep-tik 

: an utterance (such as a speech) designed to instruct and persuade

protreptic adjective

Word History

Etymology

Late Latin protrepticus hortatory, encouraging, from Greek protreptikos, from protrepein to turn forward, urge on, from pro- + trepein to turn

First Known Use

1678, in the meaning defined above