Discordianism /diskordi@nism/ , n. The veneration of Eris , a.k.a. Discordia; widely popular among hackers. Discordianism was popularized by Robert Shea and Robert Anton Wilson's novel Illuminatus! as a sort of self-subverting Dada-Zen for Westerners it should on no account be taken seriously but is far more serious than most jokes.