invalidation

invalidate

[in-val-i-deyt]
verb (used with object), invalidated, invalidating.
1.
to render invalid; discredit.
2.
to deprive of legal force or efficacy; nullify.

Origin:
1640–50; invalid2 + -ate1

invalidation, noun
invalidator, noun


1. weaken, impair; disprove, refute, rebut.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To invalidation
Collins
World English Dictionary
invalidate (ɪnˈvælɪˌdeɪt)
 
vb
1.  to render weak or ineffective, as an argument
2.  to take away the legal force or effectiveness of; annul, as a contract
 
invali'dation
 
n
 
in'validator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Related Words
Synonyms
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature