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validate

[val-i-deyt] /ˈvæl ɪˌdeɪt/
verb (used with object), validated, validating.
1.
to make valid; substantiate; confirm:
Time validated our suspicions.
2.
to give legal force to; legalize.
3.
to give official sanction, confirmation, or approval to, as elected officials, election procedures, documents, etc.:
to validate a passport.
Origin
1640-1650
1640-50; < Medieval Latin validātus (past participle of validāre to make valid), equivalent to valid- (see valid) + -ātus -ate1
Related forms
validation, noun
validator, noun
validatory
[val-i-duh-tawr-ee, -tohr-ee] /ˈvæl ɪ dəˌtɔr i, -ˌtoʊr i/ (Show IPA),
adjective
nonvalidation, noun
revalidate, verb (used with object), revalidated, revalidating.
revalidation, noun
unvalidated, adjective
unvalidating, adjective
Synonyms
1. authenticate, verify, prove.
Antonyms
1. disprove.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for re-validation

validate

/ˈvælɪˌdeɪt/
verb (transitive)
1.
to confirm or corroborate
2.
to give legal force or official confirmation to; declare legally valid
Derived Forms
validation, noun
validatory, adjective
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 re-validation

validate

v.

1640s, from Latin validatus, from validus (see valid). Related: Validated; validating.

Online Etymology Dictionary, © 2010 Douglas Harper
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