Syllogistical

{ Syl`lo*gis"tic (?), Syl`lo*gis"tic*al (?), } a. [L. syllogisticus, Gr. ?: cf. F. syllogistique.] Of or pertaining to a syllogism; consisting of a syllogism, or of the form of reasoning by syllogisms; as, syllogistic arguments or reasoning.