Definition - What does Prerogative Writ mean?
A prerogative writ is derived from old English law and is a special order to the court that is passed down to the court from the monarchy which either overrules or adds to existing law. It has not been used in modern times, but it is still on the books. It can also mean when one court issues an order to another court, such as in US law when a federal law overrides a state law. Prohibition is an example of a prerogative writ that was handed down and enacted.
Justipedia explains Prerogative Writ
There are six types of writs that are considered a prerogative writ: habeas corpus, certiorari, prohibition, procedendo, and quo warranto. In most state courts an injunction would also be considered a prerogative writ.