collegiationn.

/kəˌliːdʒɪˈeɪʃən/Etymology: noun of action, < collegiate v.
rare.
society > faith > church government > member of the clergy > pastor > [noun] > church in care of joint
1887 G. Saintsbury 26 The material structure of the church appears not to be older than the date of its collegiation.
This entry has not yet been fully updated (first published 1891; most recently modified version published online March 2018).