federation
/ˌfedəˈreɪʃən/noun
1- a group of states with a central government but independence in internal affairs联邦; 联盟, 同盟：
in names the Yugoslavian Federation.南斯拉夫联邦。
1.1
- an organization or group within which smaller divisions have some degree of internal autonomy联合会：
in names the Federation of Housing Associations.住房协会联合会。
1.2
- mass noun the action of forming states or organizations into a single group with centralized control结成联邦（或联盟）：
a first step in the federation of Europe.
欧洲结盟的初步措施之一。
派生词
federationist
noun词源
early 18th cent.: from French fédération, from late Latin foederatio （n-）, from the verb foederare 'to ally', from foedus 'league'.