Supremacy
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
The sinte of being supreme or in the highest station of power; paramount authority; sovereignty; sovereign power.
— Act of supremacy. The English stafute 1 Eliz. c. 1, whereby the supremacy and autonomy of the crown in spiritual or ecclesiastical matters was declared and established.
— Oath of supremacy. An oath to uphold the supreme power of the kingdom of England in the person of the reigning sovereign.