/pəˈtɪʃənər/ – Noun
Definition: người đưa đơn, nguyên đơn.
A more thorough explanation: A petitioner is a person who presents a formal written request to a court or other official body, typically seeking a specific legal remedy or action.
Example: In the case of Smith v. Jones, the petitioner filed a petition with the court seeking a restraining order against the respondent.