1. With the idea of the verb predominating, to judge by discerning or distinguishing; to decide, determine (class.).
A. Prop.: “ego dicam, quod mihi in mentem venit: tu dijudica,” Ter. Heaut. 5, 2, 33; so absol., Quint. 12, 7, 8 al.: “aliena melius quam sua,” Ter. Heaut. 3, 1, 98: “callide verbis controversias, non aequitate,” Cic. Caecin. 17, 49; so, “controversiam,” id. Fin. 3, 2, 6: “causam,” Liv. 40, 16: “litem,” Hor. C. 3, 5, 54 et saep.—With acc. and inf.: “quam (sc. uxorem) omnium Thebis vir unam esse optimam dijudicat,” judges, accounts, Plaut. Am. 2, 2, 45.—With rel. clause: “neque dijudicari posset, uter utri virtute anteferendus videretur,” Caes. B. G. 5, 44 fin. al.—
B. Transf., to decide by arms: “dijudicatā belli fortunā,” Caes. B. C. 2, 32, 6: “discordiae civium ferro,” Vell. 2, 3, 3.—
II. With the idea of the particle predominating, to discern by judging; to distinguish (between two): “vera et falsa,” Cic. Ac. 2, 33, 107; cf.: “recta ac prava,” id. de Or. 3, 50, 195: “jus et injuriam, honesta ac turpia (shortly before: legem bonam a mala dividere),” id. Leg. 1, 16, 44: “amorem verum et fictum,” id. Fam. 9, 16, 2: “benevolum et simulatorem,” Q. Cic. Pet. Cons. 10; “also: vera a falsis, veri similia ab incredibilibus (with distinguere),” Cic. Part. 40, 139: “inter has sententias,” id. Tusc. 1, 11, 23; “for which simply: sententias subtilissime,” Gell. 2, 7, 2.—With rel. clause: “dijudicandum est, immodicum sit an grande,” Plin. Ep. 9, 26, 6.