/ˈfedəreɪt/
no obj.
1- (of a number of states or organizations) form a single centralized unit, within which each keeps some internal autonomy（一些国家或组织）结成联邦（或联盟）。
1.1
- with obj.（通常作形容词federated）form (states or organizations) into such a centralized unit使（国家或组织）结成联邦（或联盟）：
a federated state consisting of 15 union republics.
由15个加盟共和国组成的联邦国家。
派生词
federative
adjective词源
early 18th cent. (as an adjective)： from late Latin foederatus, based on foedus, foeder- 'league, covenant'.