/ɑpəˈreɪʃən əv lɔː/ – Phrase
Definition: quá trình tự động xảy ra theo quy định pháp lý.
A more thorough explanation: a phrase used to describe a right or a liability that has been created for a party by law under existing legal principles, and not because any party specifically intended to create a right or liability
Example: The date on which this Agreement is terminated by operation of law or judicial decree.