| | Lexicon tekmérion: a sure signOriginal Word: τεκμήριον, ου, τόPart of Speech: Noun, NeuterTransliteration: tekmérionPhonetic Spelling: (tek-may'-ree-on)Short Definition: a sign, certain proofDefinition: a sign, certain proof. HELPS word-Studies 5039 tekmḗrion – properly, a marker (sign-post) supplying indisputable information, "marking something off" as unmistakable (irrefutable).  "The word is akin to tekmor a 'fixed boundary, goal, end'; hence fixed or sure" (WS, 221). NAS Exhaustive ConcordanceWord Origin from a prim. word tekmar (a mark, sign)Definition a sure signNASB Translation convincing proofs (1). 
Thayer'sSTRONGS NT 5039: τεκμήριοντεκμήριον , τεκμηριου , τό  (from τεκμαίρω  to show or prove by sure signs; from τέκμαρ  a sign), from Aeschylus  and Herodotus  down, that from which something is surely and plainly known; an indubitable evidence, a proof  (Hesychius τεκμήριον . σημεῖον ἀληθές ): Acts 1:3  (Wis. 5:11; 3Macc. 3:24). 
 
 
 
Strong's infallible proof.  Neuter of a presumed derivative of tekmar (a goal or fixed limit); a token (as defining a fact), i.e. Criterion of certainty -- infallible proof.  | 
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