pertaining to or of the nature of a union of states under a central government distinct from the individual governments of the separate states, as in federal government; federal system.
2.
of, pertaining to, or noting such a central government: federal offices.
3.
( initial capital letter ) U.S. History.
a.
of or pertaining to the Federalists or to the Federalist party.
b.
supporting the principles of the Federalist party.
c.
(in the Civil War) pertaining to or supporting the Union government.
d.
relating to or adhering to the support of the constitution.
4.
( initial capital letter ) pertaining to or designating the styles of the decorative arts and architecture current in the U.S. from c1780 to c1830.
5.
of or pertaining to a compact or a league, especially a league between nations or states.
1640s, as a theological term, from L. foedus "covenant, league" (gen. foederis), related to fides "faith" (see faith). Meaning "pertaining to a treaty" (1650s) led to political sense of "state formed by agreement among independent states" (1707), from phrases like federal
union "union based on a treaty," popularized by formation of U.S.A. 1776-1787.