/ɪnˌvælɪˈdeɪʃən/ – Noun
Definition: việc làm mất hiệu lực pháp lý, việc vô hiệu hóa, việc làm mất giá trị, việc thừa nhận không có hiệu lực.
A more thorough explanation: Invalidation is the act of rendering something legally void or ineffective, typically through a formal declaration or ruling. It can refer to the cancellation, annulment, or nullification of a legal document, contract, decision, or other official action.
Example: The court ruled that the contract was invalid due to a lack of consideration, resulting in the invalidation of the agreement.