: a person or political entity (as a nation or state) possessing or held to possess sovereignty [a controversy between two s …the United States on the one hand and the State of California on the other "U.S. Code "] see also sovereign immunity at immunity
1 : possessed of supreme power [a ruler]
2 : enjoying autonomy [ states]
3 : relating to, characteristic of, or befitting a sovereign
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.