Hyper-space is a term used to describe a theoretical space that exists beyond three-dimensional space. This term is often used in science fiction media as it is associated with the concept of faster-than-light travel or other science fiction technologies. Some synonyms for the word "hyper-space" include "subspace," "warp-space," "phantom space," or "folded space." Each of these terms has a slightly different connotation or context in which they are used in science fiction media. However, they are all used to describe the same concept of a space beyond the confines of traditional three-dimensional space.