Erastian /ɪˈɹastɪən/adjective 1noun 1forms 1 adjective1 •(historical) Of or relating to Thomas Erastus (1524–1583), Swiss physician and theologian, or his doctrines, associated with the idea that the State should have supremacy in ecclesiastical matters. noun1 •A follower of Thomas Erastus. formsErastians
