also go here to find out more info on it. http://www.utlm.org/index.htm
or go to Mormons.com
like i said if you want to go by Webster's dictionary of what a Christian really is then they are called Christians.
but just to contradict myself here is something from mormons.org.
Are you Christians?
Gordon B. Hinckley, President of The Church of Jesus Christ of Latter-day Saints, said:
"We are Christians in a very real sense and that is coming to be more and more widely recognized. Once upon a time people everywhere said we are not Christians. They have come to recognize that we are, and that we have a very vital and dynamic religion based on the teachings of Jesus Christ."
"We, of course, accept Jesus Christ as our Leader, our King, our Savior. The dominant figure in the history of the world, the only perfect Man who ever walked the earth, the living Son of the living God. He is our Savior and our Redeemer through whose atoning sacrifice has come the opportunity of eternal life."
"Members of The Church of Jesus Christ of Latter-day Saints pray and worship in the name of Jesus Christ. He is the center of our faith and the head of our Church. The Book of Mormon is Another Testament of Jesus Christ and witnesses of His divinity, His life, and His Atonement."