SUPREMACY

[noun] [U]This victory clearly proves the supremacy of the West Indies (= the fact that they are the best) in world cricket.The company has begun to challenge the supremacy (= leading position) of the current leading manufacturers in the textiles industry.Henry Ford II's greatest ambition was always to recapture the supremacy (= leading position) over General Motors which Ford had lost during the 1920s.The allies have established air supremacy (= military control of the sky).