the separation of powersBrE/ðə ˌsepəreɪʃn əv ˈpaʊəz/NAmE/ðə ˌsepəreɪʃn əv ˈpaʊərz/noun[sing.]theprincipleoftheUSConstitutionthatthepoliticalpowerofthegovernmentisdividedbetweenthePresident, CongressandtheSupremeCourt(美国宪法中行政、立法和司法的)三权分立制度➡ comparechecks and balances