Cistercianism|sɪˈstɜːʃ(ɪ)ənɪz(ə)m| [f. Cistercian + -ism.] The religious system of the Cistercians; the Cistercian spirit. 1895Athenæum 6 Apr. 440/1 Welsh Cistercianism.1898S. Evans Holy Graal 11 The predominance of what may be called Cistercianism in the Church.