/rɪˈleɪʃən bæk/ – Phrase
Definition: tác dụng ngược trở lại, hiệu lực trở về trước, hiệu lực hồi tố.
A more thorough explanation: “Relation back” is a legal doctrine that allows an amendment to a legal document or pleading to be treated as though it had been filed at the same time as the original document, rather than on the date of the amendment. This doctrine is often used to validate an amendment that would otherwise be time-barred by a statute of limitations or other deadline.
Example: The amended complaint relates back to the date of the original complaint for statute of limitations purposes.