τεκμήριον
Πρόσεχε τῷ ὑποκειμένῳ ἢ τῇ ἐνεργείᾳ ἢ τῷ δόγματι ἢ τῷ σημαινομένῳ. → Look to the essence of a thing, whether it be a point of doctrine, of practice, or of interpretation.
English (LSJ)
τό, (τεκμαίρομαι)
A = τέκμαρ 11 (cf. Arist.Rh.1357b8,9), a sure sign or token, Hdt.2.13, 9.100, etc.; τεκμηρίοισιν ἐξ οἰμωγμάτων A.Ag.1366; καὶ μὴν στίβοι γε, δεύτερον τ. Id.Ch.205; θανόντος πίστ' ἔχων τ. S.El.774; ἐμφανῆ τ. ib.1109; ἀσφαλὲς τ. E.Rh. 94; ταῦτα δὴ πάντα τ. ὅτι . . Hp.VM8: Medic., a sure symptom, Id.Prog.25, Sor.1.33, Gal.18(2).306. 2 simply sign, symbol, τοῦ φιλαποδήμου Sor.Vit.Hippocr.12. II proof (properly of an argumentative kind, opp. direct evidence, Is.4.12, 8.6), A.Eu.485, Pl.Tht.158b, al.; opp. τὰ εἰκότα, Antipho 2.4.10; but οὐκ εἰκότα τ. Id.4.4.2; τ. δίκαιον Id.1.10; τ. τινός proof of a thing, A.Eu.662, Ar. Av.482, etc.; τ. δὲ τοῦδε τὸν Ὅμηρον λαβέ (i.e. the case of Homer) Philem.97.5; also τ. περὶ τῶν μελλόντων And.3.2, cf. Pl.Tht.185b; τ. τινὸς δοῦναι, παρασχέσθαι, A.Pr.826, X.Ages.6.1; λέξω A.Eu. 447; δείξω, ἐπιδείξω, ἀποδεῖξαι, ib.662, Supp.53 (lyr.), Pl.Tht.158b; τ. ἀποφαίνειν περὶ σοφίας Id.Hp.Ma.283a; ἔχειν A.Supp.271. 2 τεκμήριον δέ as an independent clause, now the proof of it is this (which follows), take this as a proof, Th.2.39, D.20.10, etc.; more fully, τ. δέ μοι τούτου τόδε· αἱ μὲν γὰρ φαίνονται κτλ. Hdt.2.58; τ. δὲ τούτου καὶ τόδε· παρὰ μὲν Κύρου κτλ. X.An.1.9.29; χρῆσθαι τεκμηρίῳ ὅτι . . (ὅτι introducing the reason, not the fact) And.1.24, cf. Lys.30.15. 3 in the Logic of Aristotle, demonstrative proof, opp. to the fallible σημεῖον and εἰκός, APr.70b2, Rh.1357b4, 1402b19, cf. Phld.Rh.1.369 S.
