federal

1. of or relating to a form of government or a country in which power is divided between one central and several regional governments

2. of or relating to a treaty between provinces, states, etc., that establishes a political unit in which power is so divided

3. of or relating to the central government of a federation

4. (of a university) comprised of relatively independent colleges

5. a supporter of federal union or federation

1. characteristic of or supporting the Union government during the American Civil War

2. a supporter of the Union government during the American Civil War