federation /ˌfɛdəˈɹeɪ̯ʃən/noun 4adjective 1forms 1 noun4 •An array of nations or states that are unified under one central authority. •Any society or organisation formed from separate groups or bodies.FIDE appeals to all chess players and federations to accept this view. — 2022 •A collection of network or telecommunication providers that offer interoperability. •An act of joining together into a single political entity.It is 106 years since federation. adjective1 •(Australia) Of an architectural style popular around the time of federation.We live in a federation house. formsfederations
