v. fed·er·at·ed, fed·er·at·ing, fed·er·ates
To cause to join into a league, federal union, or similar association.
To become united into a federal union.
adj. (fĕdər-ĭt, fĕdrĭt)
United in a federation.
[Latin foederāre, foederāt-, to ratify an agreement, from foedus, foeder-, league, treaty; see bheidh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.