Su-prĕm'a-çy, n.

[Fr. suprématie, Sp. supremacia, It. supremazia. See SUPREME.] The state of being supreme, or in the highest station of power; higher authority or power; as, the supremacy of the king of Great Britain, or the supremacy of Parliament.

The usurped power of the pope being destroyed, the crown was restored to its supremacy over spiritual men and causes. Blackstone.

Oath of supremacy, an oath which acknowledges the supremacy of the king in spiritual affairs, and renounces or abjures the supremacy of the pope in ecclesiastical or temporal affairs. [Eng.] Brande.