A Mormon is an adherent, practitioner, follower, or constituent of Mormonism, which is the largest branch of the Latter Day Saint movement. Most commonly, the term Mormon refers to The Church of Jesus Christ of Latter-day Saints (LDS Church), which is commonly but imprecisely called the Mormon Church. In addition, the term Mormon may refer to any of the relatively small sects of Mormon fundamentalism, and any branch of the Latter Day Saint movement that recognizes Brigham Young as the successor to founder Joseph Smith, Jr.