DIATRIBE

Di″a‐tribe (?; 277), n. [[L. diatriba a learned discussion, Gr. �, prop., a wearing away of time, fr. � to rub away, spend time; διά through + � 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. The ephemeral diatribe of a faction. John Morley.