federate

[v. fed-uh-reyt; adj. fed-er-it] /v. ˈfɛd əˌreɪt; adj. ˈfɛd ər ɪt/
verb (used with object), verb (used without object), federated, federating.
1.
to unite in a federation.
2.
to organize on a federal basis.
adjective
3.
federated; allied.
Origin
1665-75; < Latin foederātus leagued together, allied, equivalent to foeder- (nominative stem foedus) league + -ātus -ate1
Related forms
federator, noun
nonfederated, adjective
refederate, verb, refederated, refederating.
unfederated, adjective
British Dictionary definitions for federate

federate

verb (ˈfɛdəˌreɪt)
1.
to unite or cause to unite in a federal union
adjective (ˈfɛdərɪt)
2.
federal; federated
Derived Forms
federative, adjective
Word Origin and History for federate
v.

1814 (implied in federated), back-formation from federation, or else from Latin foederatus "having a treaty, bound by treaty," past participle of foederare "to establish by treaty," from foedus (see federal). Related: Federating. As an adjective, by 1710.