Definition of invalidation in US English:

invalidation

noun

  • See invalidate

    • ‘The commerce clause of the constitution has enabled it powerfully to influence the economy by invalidation of any state legislation deemed likely to burden interstate commerce unduly.’
    • ‘What are some changes for the emergence of better school system, a system not oriented to marks and invalidation or a system, which is humane and recognises the child as a precious asset of the world?’
    • ‘I asked members of the faculty at the University of Chicago Law School to estimate the number of Supreme Court invalidations of state and federal law.’
    • ‘The newspaper has written to the Independent Committee Against Corruption asking for the immediate return of seized material and the invalidation of warrants used against it.’
    • ‘Under one of the bills, the Post-Privatisation Control Agency should be allowed to take action towards invalidation of privatisation contracts in circumstances, which would justify such action.’

Pronunciation

invalidation

/inˌvaləˈdāSH(ə)n//ɪnˌvæləˈdeɪʃ(ə)n/