Rosicrucian UK /ˌɹəʊ.zɪˈkɹuːʃən/US /ˌɹoʊ.zɪˈkɹuʃən/noun 2adjective 1forms 1 noun2 •A 'Brother' of the 'Order of the Rose Cross'; a member of a Rosicrucian Order. •A member of certain modern groups or organizations formed for the study of Rosicrucianism and allied subjects. adjective1 •Mystic, occult or esoteric and related to the philosophy of Rosicrucianism. formsRosicrucians