美帝國主義 měidìguózhǔyì American imperialism Origin Definitions Defs Strokes Stroke Words Sentences Sents 美 měi proper nounnoun USA (bound form) abbreviation for the United States of America 美国 měiguó帝国主义 帝國主義 dìguózhǔyì imperialism A policy of extending a country's power and influence through diplomacy, economic force, or military strength; also refers to the highest stage of capitalism in Marxist theory.