tesseract

== English == === Alternative forms === tessaract === Etymology === From tessara- (“four-”) +‎ Ancient Greek ἀκτίς (aktís, “ray”). === Pronunciation === IPA(key): /ˈte-sə-ˌrakt/ === Noun === tesseract (plural tesseracts) (mathematics, geometry) The four-dimensional analogue of a cube; a 4D polytope bounded by eight cubes (analogously to the way a cube is bounded by six squares). (science fiction) Any of various fictional mechanisms that explain extradimensional, superluminal, or time travel outside the geometry of the physical universe. ==== Synonyms ==== (analogue of a cube): four-dimensional hypercube, 4-cube, 8-cell, octachoron, tetracube ==== Hypernyms ==== hypercube, polytope, polychoron ==== Derived terms ==== tesseractic ==== Related terms ==== tessera ==== Translations ==== === Further reading === Tesseract on Wikipedia.Wikipedia Tesseract (disambiguation) on Wikipedia.Wikipedia Tesseract on Wolfram MathWorld === Anagrams === rascettes