imperialism /ɪmˈpirijəˌlɪzəm/ noun Learner's definition of IMPERIALISM
[noncount]
1
: a policy or practice by which a country increases its power by gaining control over other areas of the world帝国主义 2
: the effect that a powerful country or group of countries has in changing or influencing the way people live in other, poorer countries势力扩大;扩张主义