dominant

/ˈdɒmɪnənt/ adjective

Definition

› more important, powerful, or successful than other people, companies, etc.: The question was whether cable or wireless would become dominant. dominant force/player For a long time Detroit was the dominant force in the American car industry.dominant market share/position The company is well run, with a dominant market share in many snack-food categories.

(Definition of dominant adjective from the Cambridge Business English Dictionary © Cambridge University Press)