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verify

[ver-uh-fahy] /ˈvɛr əˌfaɪ/
verb (used with object), verified, verifying.
1.
to prove the truth of, as by evidence or testimony; confirm; substantiate:
Events verified his prediction.
2.
to ascertain the truth or correctness of, as by examination, research, or comparison:
to verify a spelling.
3.
to act as ultimate proof or evidence of; serve to confirm.
4.
Law.
  1. to prove or confirm (an allegation).
  2. to state to be true, especially in legal use, formally or upon oath.
Origin
1275-1325
1275-1325; Middle English verifien < Middle French verifier < Medieval Latin vērificāre, equivalent to vēri-, combining form of vērus true + -ficāre -fy
Related forms
verifiability, verifiableness, noun
verifiable, adjective
verifier, noun
nonverifiable, adjective
preverify, verb (used with object), preverified, preverifying.
reverify, verb (used with object), reverified, reverifying.
unverifiability, noun
unverifiable, adjective
Synonyms
2. authenticate, validate.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for verifier
  • Their work was often checked by a second operator using a verifier machine.
British Dictionary definitions for verifier

verify

/ˈvɛrɪˌfaɪ/
verb (transitive) -fies, -fying, -fied
1.
to prove to be true; confirm; substantiate
2.
to check or determine the correctness or truth of by investigation, reference, etc
3.
(law) to add a verification to (a pleading); substantiate or confirm (an oath)
Derived Forms
verifiable, adjective
verifiableness, noun
verifiably, adverb
verifier, noun
Word Origin
C14: from Old French verifier, from Medieval Latin vērificāre, from Latin vērus true + facere to make
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for verifier
verify
early 14c., from O.Fr. verifier, from M.L. verificare "make true," from L. verus "true" (see very) + root of facere "to make" (see factitious).
Online Etymology Dictionary, © 2010 Douglas Harper
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