conciliarist

From conciliar +‎ -ist.

• (UK) IPA^(key): /kənˈsɪlɪəɹɪst/

conciliarist (plural conciliarists)

1. A believer in conciliarism; someone who thinks the highest authority of the Church is found in ecumenical councils.
   • 2009, Diarmaid MacCulloch, A History of Christianity: The First Three Thousand Years‎, New York: Penguin Books, published 2011, →ISBN, page 561:

     Conciliarists never achieved consensus as to how to define the Church or account for the authority of a council.