The Collaborative International Dictionary of English v.0.48:
Latter-day saint \Lat"ter-day` saint"\n. A Mormon; -- the Church of Jesus Christ of Latter-day Saints being the name assumed by the whole body of Mormons. [1913 Webster]WordNet (r) 3.0 (2006):
Latter-Day Saint n 1: a member of the Church of Jesus Christ of Latter-Day Saints [syn: Latter-Day Saint, Mormon]