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[tes-uh-rakt] /ˈtɛs əˌrækt/
the generalization of a cube to four dimensions.
Origin of tesseract
1885-90; < Greek tésser(es) four + aktís ray Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for tesseract
Historical Examples
  • A line has one dimension, a square has two, a cube has three, and a tesseract has four.

    Wait for Weight Jack McKenty
  • A cube can be unfolded into six squares, and a tesseract unfolds to eight cubes.

    Wait for Weight Jack McKenty
  • Something—something like a Klein Bottle—or a tesseract—or maybe both of them together.

    What Rough Beast? Jefferson Highe
  • The hypercube or tesseract is described by moving the generating cube in the direction in which the fourth dimension extends.

    The Mystery of Space Robert T. Browne
  • When pressure is applied, it folds up into a tesseract so that it takes up less room and relieves the pressure.

    Wait for Weight Jack McKenty
  • Im also the Herr Reames of several other articles, such as on the mechanics of continua and the mass and inertia of the tesseract.

Word Origin and History for tesseract

1888, from tessera + Greek aktis "ray" (see actino-).

Online Etymology Dictionary, © 2010 Douglas Harper
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tesseract in Science

A four-dimensional hypercube, having sixteen corners. See more at hypercube.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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