<p><strong>Noun</strong></p><ul><li>the act of federating or uniting in a league.</li><li>the formation of a political unity, with a central government, by a number of separate states, each of which retains control of its own internal affairs.</li><li>a league or confederacy.</li><li>a federated body formed by a number of nations, states, societies, unions, etc., each retaining control of its own internal affairs.</li></ul>