ἐπιστήμ-ων, ον,
genitive ονος, (ἐπίσταμαι) knowing, wise, prudent, ἐ. βουλῇ τε νόῳ τε [[ 8th c.BC: Odyssea Homerus Epicus “Odyssey” 16.374; ἄρχοντες 5th-6th c.BC: Xenophon Historicus “Oeconomicus” 21.5 ] Refs 8th c.BC+]; ἐπιστήμων γὰρ εἶ, ={ἐπίστασαι γάρ}, [[ 5th c.BC: Euripides Tragicus “Supplices” 843. ] Refs 5th c.BC+]
__2. acquainted with a thing, skilled or versed in, with genitive, κακῶν [[ 5th c.BC: Sophocles Tragicus “Fragmenta” 589 ] Refs 5th c.BC+]; τῆς θαλάσσης, τοῦ ναυτικοῦ, [[ 5th c.BC: Thucydides Historicus 1.142, 8.45 ] Refs 5th c.BC+]; τῆς τέχνης [[ 5th-6th c.BC: Plato Philosophus “Gorgias” 448b; τῶν τόπων “POxy.” 1469.12 (3rd c.AD)] Refs 5th c.BC+]; also περί τινος or τι, [[ 5th-6th c.BC: Plato Philosophus “Respublica” 599b, “Sis.” 389e ] Refs 5th c.BC+]: with neuter adjective, τὰ προσήκοντα ἐπιστήμων [[ 5th-6th c.BC: Xenophon Historicus “Institutio Cyri (Cyropaedia)” 3.3.9, compare “Oec.” 2.16 (_superlative_). ] Refs 5th c.BC+]
__3. with infinitive, knowing how, λέγειν τε καὶ σιγᾶν [[ 5th-6th c.BC: Plato Philosophus “Phaedrus” 276a, compare 5th-6th c.BC: Xenophon Historicus “Oeconomicus” 19.16 ] Refs 5th c.BC+]: comparative -ονέστερος[[ 5th-6th c.BC: Plato Philosophus “Charmides” 174a ] Refs 5th c.BC+]. adverb comparative -ονέστερον[[ 5th-6th c.BC: Xenophon Historicus “Oeconomicus” 3.14 ] Refs 5th c.BC+]: superlative -ονέστατα[[ 5th-6th c.BC: Plato Philosophus “Respublica” 534d. ] Refs 5th c.BC+]
__II. possessed of perfect knowledge, [[ [prev. author] “Plt.” 301b, etc.; opposed to δοξαστής, τινός [prev. author] “Tht.” 208e, in 4th c.BC: Aristoteles Philosophus ] Refs 4th c.BC+], scientifically versed in a thing, [[“Anthologia Graeca” 0.74b28, “Cat.” 11a33] Refs]. adverb -ονως, ἔχειν πρός τι [[ 5th-6th c.BC: Plato Philosophus “Sophista” 233c: λέγειν] Refs 5th c.BC+] with science, with art, [[ [prev. author] “Tht.” 207b ] Refs]; εἰπεῖν use technical or scientific terminology, [[ 2nd c.AD: Aristides Rhetor “Orationes” 26(14).97. ] Refs 2nd c.AD+]