n. & adj.
n. 1 hist. a member of a 17th-18th-c. society devoted to the study of metaphysical and mystical lore (said to have been founded in 1484 by Christian Rosenkreuz). 2 a member of any of several later organizations deriving from this.
adj. of or relating to the Rosicrucians. Rosicrucianism n.
[ mod.L rosa crucis (or crux), as Latinization of G Rosenkreuz ]