2. sever, detach from, “τινὰ ἀπὸ τοῦ συμμαχικοῦ” Hdt.6.9; ἀ. Αυδούς part them off, separate them, Pl.Plt.262e; “τὴν ἰδίαν ψυχὴν τῆς τῶν λογικῶν” M.Ant.4.29:— Pass., ἀποσχισθῆναι ἀπό . ., of a river being parted from the main stream, Hdt.2.17, 4.56; of a tribe detached from its parent stock, Id.1.58,143; “ἀπὸ τῆς μεγάλης φλεβὸς -σχίζεται” Arist.HA514b10: c. gen., “ἀποσχισθέντες τῆς ἄλλης στρατιῆς” Hdt.8.35, cf. 7.233, Pl. Plt.267b, etc.:—Med., separate oneself, Id.Lg.728b; “τοῦ σοφιστοῦ” Lib.Or.3.24.
3. metaph., ἀ. τινὰ τοῦ λόγου cut him off from his speech, interrupt him in it, Ar.Nu.1408.