Nikonian UK /nɪˈkəʊ.ni.ən/US /nɪˈkoʊ.ni.ən/adjective 1noun 1forms 3 adjective1 •Of or pertaining to Nikon. noun1 •A follower of the main current of the Russian Orthodox Church, which accepted the reforms undertaken during the reign of Patriarch Nikon. formsNikonians · more Nikonian · most Nikonian
