n. [ L. diatriba a learned discussion, Gr. &unr_;, prop., a wearing away of time, fr. &unr_; to rub away, spend time; dia` through + &unr_; to rub: cf. L. terere, F. trite: cf. F. diatribe. ] A prolonged or exhaustive discussion; especially, an acrimonious or invective harangue; a strain of abusive or railing language; a philippic. [ 1913 Webster ]
The ephemeral diatribe of a faction. John Morley. [ 1913 Webster ]