‖ rhesis|ˈriːsɪs| [a. Gr. ῥῆσις word, speech.] A set speech or discourse. 1871Browning Balaust.Wks. 1896 I. 629/2 Any who could speak A chorus to the end, or prologize, Roll out a rhesis.1906Athenæum 31 Mar. 383/2 The discourse (or rhesis) put into the mouth of Martin.