Search Result for "invalidation": 
Wordnet 3.0

NOUN (1)

1. (law) a formal termination (of a relationship or a judicial proceeding etc);
[syn: annulment, invalidation]

The Collaborative International Dictionary of English v.0.48:

Invalidation \In*val`i*da"tion\, n. The act of inavlidating, or the state of being invalidated. [1913 Webster] So many invalidations of their right. --Burke. [1913 Webster]
WordNet (r) 3.0 (2006):

invalidation n 1: (law) a formal termination (of a relationship or a judicial proceeding etc) [syn: annulment, invalidation]
Moby Thesaurus II by Grady Ward, 1.0:

51 Moby Thesaurus words for "invalidation": abolishment, abolition, abrogation, annulment, cancel, canceling, cancellation, cassation, counterbalancing, countermand, counterorder, defeasance, disconfirmation, disproof, disproval, disproving, explosion, expose, exposure, frustration, negation, neutralization, nullification, offsetting, recall, recantation, redargution, reductio ad absurdum, renege, repeal, rescinding, rescindment, rescission, retraction, reversal, revocation, revoke, revokement, setting aside, suspension, thwarting, undoing, vacation, vacatur, vitiation, voidance, voiding, waiver, waiving, withdrawal, write-off