certiorari

As a letter s

is the letter s with a.

As a noun certiorari is

(us|legal) a grant of the right of an appeal to be heard by an appellate court where that court has discretion to choose which appeals it will hear.

As nouns the difference between mandamus and certiorari

is that mandamus is a common law prerogative writ that compels a court or government officer to perform mandatory or purely ministerial duties correctly while certiorari is a grant of the right of an appeal to be heard by an appellate court where that court has discretion to choose which appeals it will hear.

As a noun certiorari

is (us|legal) a grant of the right of an appeal to be heard by an appellate court where that court has discretion to choose which appeals it will hear.

As a proper noun prohibition is

(history) any of several periods during which the manufacture, transportation, import, export, and sale of alcoholic beverages were restricted or illegal.