Multiverse

A multiverse is a world that contains other multiverses or universes, perhaps both. It is filled with multiversal space, in which these other worlds are suspended. It seems to be the case that every multiverse is contained within yet another multiverse, forming a world tree with no root. A hypothetical all-encompassing multiverse is known as the Omniverse, or Ueiqdn, which is also used to describe the concept of all existence.