A.knowing, wise, prudent, “ἐ. βουλῇ τε νόῳ τε” Od. 16.374; “ἄρχοντες” X.Oec.21.5; ἐπιστήμων γὰρ εἶ, = ἐπίστασαι γάρ, E. Supp.843.
2.. acquainted with a thing, skilled or versed in, c. gen., “κακῶν” S.Fr.589; τῆς θαλάσσης, τοῦ ναυτικοῦ, Th.1.142, 8.45; τῆς “τέχνης” Pl.Grg.448b; “τῶν τόπων” POxy.1469.12 (iii A.D.); also περί τινος or τι, Pl.R.599b, Sis.389e: with neut. Adj., “τὰ προσήκοντα ἐπιστήμων” X.Cyr.3.3.9, cf. Oec.2.16 (Sup.).
3.. c. inf., knowing how, “λέγειν τε καὶ σιγᾶν” Pl.Phdr.276a, cf. X.Oec.19.16: Comp. “-ονέστερος” Pl.Chrm.174a. Adv. Comp. “-ονέστερον” X.Oec.3.14: Sup. “-ονέστατα” Pl.R.534d.
II.. possessed of perfect knowledge, Id.Plt.301b, etc.; opp. “δοξαστής, τινός” Id.Tht.208e, in Arist., scientifically versed in a thing, AP0.74b28, Cat.11a33. Adv. “-ονως, ἔχειν πρός τι” Pl.Sph.233c: λέγειν with science, with art, Id.Tht.207b; εἰπεῖν use technical or scientific terminology, Aristid.Or.26(14).97.