Pronounced: khah-SID-ik, Origin: Hebrew, a stream within ultra-Orthodox Judaism that grew out of an 18th-century mystical revival movement.
Discover More
The Ari: Rabbi Isaac Luria
A central figure in the development of Jewish mysticism, Luria died at 38 and left behind no significant writings.
Menachem Mendel Schneerson
The seventh leader of the Chabad Hasidic sect built a global outreach movement.