Meanings (ES + gloss)
teseracto
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).
Hence the cube determined by these axes is the face of the tesseract which we now have before us.
[…]then it would trace out a higher cube, or tesseract, and each of the six surrounding cubes, carried on in the same motion, would trace tesseracts also,[…].
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