A "Petitioner" is an individual or entity that formally requests a court or other authority to take a specific action or make a legal decision. This term is commonly used in legal contexts, such as in lawsuits or appeals, where the petitioner seeks a remedy or resolution to a dispute. In many cases, the petitioner submits a written document, often called a petition, outlining their request and the reasons for it. The petition is then reviewed by the relevant authority, which may include judges or administrative bodies, to determine whether to grant the requested action.