"Plural marriage" refers to a type of marriage where a person has more than one spouse at the same time, typically more than one wife or more than one husband. Full definition
Yet these modern Saints who have elected to live in plural marriage as the most dramatic and satisfying means of demonstrating total commitment to the fullness of the gospel are clearly a part of the picture. (religion-online.org)
This was when Taylor shared a revelation, which he said he received from both Jesus Christ and Joseph Smith, upholding the practice of plural marriages. (religion.blogs.cnn.com)
In fact, even if LDS Church members don't practice plural marriage on earth, their scripture still teaches that in heaven it is possible. (religion.blogs.cnn.com)