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 invalidated
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
Example sentences
If the results are contradictory to your belief system then it doesn't mean
  that your belief system is invalidated.
But nothing has ever invalidated his general theory of natural selection.
The point the said philosopher makes is that the scientific idea should not be
  invalidated because of its source of inspiration.
Their theories get disproved, or research is invalidated.
Related Words
Related Searches
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature