> "Certiorari is generally associated with the writ that the Supreme Court of the United States issues to review a lower court's judgment. A case cannot, as a matter of right, be appealed to the U.S. Supreme Court. As such, a party seeking to appeal to the Supreme Court from a lower court decision must file a writ of certiorari.
> In the Supreme Court, if four Justices agree to review the case, then the Court will hear the case. This is referred to as "granting certiorari," often abbreviated as "cert." If four Justices do not agree to review the case, the Court will not hear the case. This is defined as denying certiorari."
1. https://www.law.cornell.edu/wex/certiorari#:~:text=In%20the%....