supremacy
n. uncountable C1 Advanced US //səˈpɹɛməsi// UK //suːpɹˈɛməsi// suprema·cy
n. a position where one person or group has more power, authority, or success than everyone else.
n. the state or condition of being superior to all others in authority, power, or status.
The team fought hard to maintain their supremacy in the league.
The empire's naval supremacy allowed it to control trade routes across the entire region for centuries.
The rapid advancement of semiconductor technology has become a central battleground for nations seeking technological supremacy in the global market.
From supreme + -acy (a variant of -cy). Compare with supremity and New Latin suprematia.
Usage
Often used in the abstract sense; frequently paired with 'over' to indicate the group being dominated.