from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The four-dimensional equivalent of a cube.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The four-dimensional analogue of a cube; a 4D polytype bounded by eight cubes (in the same way a cube is bounded by six squares).
- n. Any of various fictional mechanisms that explain extradimensional, superluminal, or time travel outside the geometry of the physical universe.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the four-dimensional analogue of a cube
Greek tessera, neuter pl. of tesseres, four; see tessera + aktīs, ray of light; see actino-.(American Heritage® Dictionary of the English Language, Fourth Edition)
From tessara- + Ancient Greek ἀκτίς ("ray"). (Wiktionary)