Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “federation”


noun [C]    /ˌfed·əˈreɪ·ʃən/
a group of organizations, states, etc., that have united to form a larger organization or government: Canada is a federation of provinces and territories.
(Definition of federation noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of federation

Definitions of “federation” in other dictionaries

Word of the Day


showing a wish to help or bring advantages to others, even if it results in disadvantage for yourself

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More