Morisonian UK /ˌmɒɹɪˈsəʊ.ni.ən/US /ˌmɔɹɪˈsoʊ.ni.ən/ noun1 •A member of the Evangelical Union, formed in 1843 by the Reverend James Morison (1816-93), after his separation from the United Secession Church. formsMorisonians