A member of an international organization, especially the Ancient Mystic Order Rosae Crucis and the Rosicrucian Order, devoted to the study of ancient mystical, philosophical, and religious doctrines and concerned with the application of these doctrines to modern life.
A member of any of several secret organizations or orders of the 17th and 18th centuries concerned with the study of religious mysticism and professing esoteric religious beliefs.
adj. Of or relating to Rosicrucians or their philosophy.
[From New Latin (Frāter) Rosae Crucis, (Brother) of the Cross of the Rose, translation of German Rosenkreutz, surname of the traditional founder of the society.] Ro'si·cru'cian·ism n.