The Collaborative International Dictionary
Oath supremacy
Supremacy \Su*prem"a*cy\, n. [Cf. F. supr['e]matie. 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.