WordNet (r) 3.0 (2006):
federalise v 1: put under the control and authority of a federal government [syn: federalize, federalise] 2: enter into a league for a common purpose; "The republics federated to become the Soviet Union" [syn: federate, federalize, federalise] 3: unite on a federal basis or band together as a league; "The country was federated after the civil war" [syn: federate, federalize, federalise]