one of the countries in the world that has very great military or economic power and a lot of influence, for example the USOxford Collocations DictionarySuperpower is used before these nouns: statusSuperpower is used after these nouns: worldSeefull entryExtra examplesJapan’s status as an economic superpowerPolitically, the 1950s saw a Cold War between the superpowers.The United States was left as the only global superpower.
See superpower in the Oxford Learner's Dictionary of Academic EnglishSee superpower in the Oxford Advanced American Dictionary