congregational

UK: /ˌkɒŋɡrɪˈɡeɪʃən^əl/ US: (kong′gri gā′shə nl)

WordReference Random House Unabridged Dictionary of American English © 2025

con•gre•ga•tion•al  (kong′gri gā′shə nl), adj. 

1. of or pertaining to a congregation:
   congregational singing.
2. Religion (cap.) pertaining or adhering to a form of Protestant church government in which each local church acts as an independent, self-governing body, while maintaining fellowship with like congregations.

• congregation + -al¹ 1570–80

con′gre•ga′tion•al•ly, adv. 

Collins Concise English Dictionary © HarperCollins Publishers::

congregational / ˌkɒŋɡrɪˈɡeɪʃən^əl/ adjective

1. of or relating to a congregation
2. (usually capital) of, relating to, or denoting the Congregational Church, its members, or its beliefs