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pseudosphere

[soo-duh-sfeer]

noun

Geometry.
  1. a surface generated by revolving a tractrix about its asymptote.



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Other Word Forms

  • pseudospherical adjective
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Word History and Origins

Origin of pseudosphere1

First recorded in 1885–90; pseudo- + sphere
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He was immediately drawn to this geometry in 2003 when he saw a small, 19th-century mathematical model in a classroom at Tokyo University, designed to illustrate “a surface of revolution with a constant negative curvature,” also known as a pseudosphere.

Read more on New York Times

A few of my favorite favorite spaces this year were the pseudosphere, Kovalevskaya top, Koch snowflake, and humble circle.

Read more on Scientific American

If, instead Transition to the projective method. of referring to the pseudosphere, we merely define distance and angle, in the Euclidean plane, as those functions of the coordinates which gave us distance and angle on the pseudosphere, we find that the geometry of our plane has become Lobatchewsky’s.

Read more on Project Gutenberg

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pseudosolutionpseudosymmetry