A.being with or together, esp. for purposes of feasting or conversing, social intercourse, society, Hdt.6.128, A.Eu.285, S.OC647, etc.; “κομψὸς ἐν συνουσίᾳ” Ar.Nu.649; ς. τινός intercourse with one, “σοφοὶ τύραννοι τῶν σοφῶν ξυνουσίᾳ” S.Fr.14; γυναικῶν ς. (with a play on signf. 4) Ar. Ec.110 = Trag.Adesp.51; ἡ τοῦ θείου ς. communion with . . , Pl.Phd. 83e; τῆς νόσου ξυνουσίᾳ by long intercourse with it, S.Ph.520; προϊούσης τῆς ς. as the conversation goes on, Pl.Tht.150d; ς. ποιεῖσθαι hold conversation together, Id.Sph.217e, Smp.176e, al.; “τὴν ς. διαλῦσαι” Id.La.201c: pl., Isoc.4.45, Pl.Phd.111b, al.; ξυνουσίαι θηρῶν, = οἱ ξυνόντες θῆρες, S.Ph.936.
3. intercourse with a teacher, attendance at his teaching, μισθὸς τῆς ς. X.Mem.1.2.60, cf. 6.11; ἡ πρὸς Σωκράτην ς. αὐτοῖν their intercourse with him, ib.1.2.13; “ἡ περὶ γράμματα ς. τῶν μανθανόντων” Pl.Plt.285c; ἡ σὴ ς. intercourse with you, Id.Prt. 318a.
4. sexual intercourse, Democr.32, Pl.Lg.838a, X.Cyr.6.1.31 (v.l.), Epicur.Fr.62, etc.; ἡ ἀνδρὸς καὶ γυναικὸς ς. Pl.Smp.206c (interpol.); “ἀνδρῶν” X.Oec.9.11; ἡ πρὸς τοὺς ἄρρενας ς. Arist.Pol.1269b27; ἡ τῶν ἀφροδισίων ς. Pl.Smp.192c; “ἡ τῆς παιδογονίας” Id.Lg.838e; of animals, copulation, Arist.HA630b35, al.; cf. σύνειμι （εἰμί sum) 11.2.
II. in concrete sense, a society, company, party, Hdt.2.78 (pl.), Pl.Smp.173a, Lg.672a; ἡ ἐν οἴνῳ ς., = συμπόσιον, Id.Lg.652a; αἱ ἐν τοῖς πότοις ς. Isoc.1.32; πότοι καὶ ς. Id.15.286; αἱ σοφαὶ ξυνουσίαι literary parties, conversazioni, Ar.Th.21; “εἰς τὰς ς. . . παραλαμβάνουσι τὴν μουσικήν” Arist.Pol.1339b22.
