invalidation
/ɪnˌvælɪˈdeɪʃən/
noun
- The act or process of making something legally or officially void; the state of being no longer valid.
- The invalidation of the election results led to a public outcry.
- The invalidation of his driver's license meant he had to retake the test.
- She filed for invalidation of the patent because it was based on false claims.
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