Chabad, also known as Lubavitch, Habad and Chabad-Lubavitch (Hebrew: חב"ד), is an Orthodox Jewish Hasidic dynasty. Chabad is one of the world's best-known Hasidic movements, particularly for its outreach activities. It is one of the largest Hasidic groups and Jewish religious organizations in the world. Unlike most Haredi groups, which are self-segregating, Chabad operates mainly in the wider world and caters to secularized Jews.
Founded in 1775 by Rabbi Shneur Zalman of Liadi, the name "Chabad" (חב״ד) is an acronym formed from three Hebrew words—Chokhmah, Binah, Da'at (the first three sefirot of the kabbalistic Tree of Life) (חכמה, בינה, דעת): "Wisdom, Understanding, and Knowledge"—which represent the intellectual and kabbalistic underpinnings of the movement. The name Lubavitch derives from the town in which the now-dominant line of leaders resided from 1813 to 1915. Other, non-Lubavitch...