Su*prem"a*cy (?), n. [Cf. F.
suprématie. See Supreme.] The state of being
supreme, or in the highest station of power; highest or supreme
authority or power; as, the supremacy of a king or a
parliament.
The usurped power of the pope being destroyed, the
crown was restored to its supremacy over spiritual men and
causes.
Blackstone.
Oath supremacy, an oath which acknowledges
the supremacy of the sovereign in spiritual affairs, and renounced or
abjures the supremacy of the pope in ecclesiastical or temporal
affairs. [Eng.] Brande & C.