- invalidation (of something)
the act of saying that a document, contract, election, etc. is no longer legally or officially acceptable 使无效；使作废 the invalidation of the regulation by the High Court 高等法院对该规例的无效
- invalidation (of something)
the act of proving that an idea, a story, an argument, etc. is wrong 证明…错误；使站不住脚 the invalidation of the theory 理论的无效