Quick Definition
τεκμήριον, ου, τό n.n. a sign, certain proof
Strong's Definition
neuter of a presumed derivative of tekmar (a goal or fixed limit); a token (as defining a fact), i.e. criterion of certainty
KJV Usage: infallible proof
UBS Dictionary of the Greek New Testament
noun, n. | -ου
28.45 · Know · Well Known, Clearly Shown, Revealed
evidence, proof, convincing proof that which causes something to be known as verified or confirmed In a number of languages ‘convincing proof’ is rendered as ‘that which causes one to know for sure’ or ‘... with certainty.’
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
τεκμήριον, -ov, τό, (fr. τεκμαίρω to show or prove by sure signs; fr. τέκμαρ a sign), fr. Aeschyl. and Hdt. down, that from which something is surely and plainly known; an indubitable evidence, a proof, (Hesych. τεκμήριον σημεῖον ἀληθές): Acts i. 3 (Sap. v.11; 3 Mace. iii. 24).
Mounce Concise Greek Dictionary
τεκμήριον tekmērion 1x
a sign, indubitable token, clear proof, Acts 1:3*
Abbott-Smith Greek Lexicon
** τεκμήριον, -ου, τό
(< τέκμαρ, a mark, sign), [in LXX: Wi 5:4 19:13, III Mac 3:24 * ;]
a sure sign, a positive proof: Ac 1:3 (for exx., v. MM, xxiv).†
SYN.: ἔνδειγμα, q.v
Moulton & Milligan — Vocabulary of the Greek NT
τεκμήριον. This strong word which AV renders ‘‘ infallible proof ’’ in Ac 18 may be illustrated by an Ephesian inser. .Sy// 656 (=% 867)37 (c. A.D. 160), where it is mentioned as μέγιστον τεκμήριον of the σεβασμός accorded to the goddess Artemis that a month is named after her. Cf. also 2. 920 (=* 685)8# (B.C. 139) μέγιστον καὶ ἰσχυρότατον τεκμήριον, and P Tor I. riv.11 (B.C, 116) μέγα τι συμβάλλεσθαι τεκμήριον, also Vii 52, In another Ptolemaic papyrus P Giss I. 3995 (B.c. 204-181) τεκμήριον stands beside ὅρκος. The editors render P Ryl II. 15918 (A.D. 31-2) tv’ ὑπάρχωσι τῇ [Ταχόιτι αἱ παραχωρούμεναι ἄρουραι σὺν τοῖς ἄλλοις τεκμηρίοις. . ., ‘in order that the arurae ceded may appertain to Tachois with all other titles ”’ (i.e. ‘‘titledeeds’’), but in their note they cite the parallel formula P Oxy III. 504! (early ii/a.p.) σὺν τοῖς ἄλλοις σημίοιϊίς, where the σημεῖα may possibly refer to ‘‘ boundary-marks.”’ It may be added that, according to Hobart p. 184, ‘‘ Galen expressly speaks of the medical distinction between τεκpyptov—demonstrative evidence—and σημεῖον, stating that rhetoricians as well as physicians had examined the evidence.”” For the verb τεκμαίρομαι, see P Ryl II. 74° (A.D. 133-5) where a prefect declares that time will not permit his carrying out two purposes—tekpalpopat τὸν χρόνον οὐΐχ ἱκανὸν εἶναι εἰ]ς ἀμφότερα.
Liddell-Scott-Jones — Greek-English Lexicon
τεκμήριον (tekmērion) — clear proof. τεκμήρι-ον, τό, (τεκμαίρομαι) ={τέκμαρ}[Refs 4th c.BC+], a sure sign or token, [Refs 5th c.BC+]; καὶ μὴν στίβοι γε, δεύτερον τ. [Refs]; θανόντος πίστ᾽ ἔχων τ. [Refs 5th c.BC+]; ἀσφαλὲς τ. [Refs 5th c.BC+]: in Medicine texts, a sure symptom, [Refs 2nd c.AD+]
2. simply sign, symbol, τοῦ φιλαποδήμου [Refs 2nd c.AD+]
II. proof (properly of an argumentative kind, opposed to direct evidence, [Refs 5th c.BC+]; opposed to τὰ εἰκότα, [Refs 5th c.BC+]; but οὐκ εἰκότα τ. [Refs]; τ. τινός proof of a thing, [Refs 5th c.BC+]; τ. δὲ τοῦδε τὸν Ὅμηρον λαβέ (i.e. the case of Homer) [Refs 5th c.BC+]; τ. τινὸς δοῦναι, παρασχέσθαι, [Refs 5th c.BC+]; δείξω, ἐπιδείξω, ἀποδεῖξαι,[Refs 5th c.BC+]
II.2. τεκμήριον δέ as an independent clause, now the proof of it is this (which follows), take this as a proof, [Refs 5th c.BC+]; more fully, τ. δέ μοι τούτου τόδε· αἱ μὲν γὰρ φαίνονται κτλ. [Refs 5th c.BC+]; τ. δὲ τούτου καὶ τόδε· παρὰ μὲν Κύρου κτλ. [Refs 5th c.BC+]; χρῆσθαι τεκμηρίῳ ὅτι.. (ὅτι introducing the reason, not the fact) [Refs 5th c.BC+]
II.3. in the Logic of Aristotle, demonstrative proof, opposed to to the fallible σημεῖον and εἰκός, [Refs 5th c.BC+]