Definitions of writ of certiorari
(US law) an order is issued by the US Supreme Court directing a lower court, tribunal, or other public authority to send the record of a trial or other proceeding for review
The US Supreme Court uses the writ of certiorari to control its appellate caseload.
an official request for a higher court to review the decision made by a lower court
The Supreme Court denied the challengers a writ of certiorari.