The power, right, or authority to interpret and apply the law. / The power or right to exercise authority. / The power or right to perform some action as part of applying the law.

plural of jurisdiction

Of or pertaining to jurisdiction.

jurisdictional

(law) in the law of civil procedure, the ability of a court to hear a case brought against a party stemming from that party's presence, activities, or contacts within a specified set of geographical boundaries, usually the borders of a county, state, or nation.

(US, law) The power of a court to review and potentially modify the decisions made by another court or tribunal.

(international law) A principle whereby a state claims legal jurisdiction over persons whose alleged crimes were committed outside the boundaries of the prosecuting state, regardless of the accused's nationality, country of residence, or other relationship with the prosecuting country.

plural of personal jurisdiction

(law) In United States law, jurisdiction of a federal court over a cause of action arising from all parties being from different U.S. states.

(US, law) The authority of United States federal courts to hear additional claims substantially related to an original claim, even though the court would lack the subject-matter jurisdiction to hear the additional claims independently.