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prismatoid

[ priz-muh-toid ]

noun

, Geometry.
  1. a polyhedron having its vertices lying on two parallel planes.

prismatoid

/ ˈprɪzməˌtɔɪd /

noun

  1. a polyhedron whose vertices lie in either one of two parallel planes Compare prism prismoid
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˌprismaˈtoidal, adjective
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Word History and Origins

Origin of prismatoid1

1855–60; < Greek prīsmat- (stem of prîsma ) prism + -oid
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Word History and Origins

Origin of prismatoid1

C19: from Greek prismatoeidēs shaped like a prism; see prism , -oid

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prismatic telescopeprism binocular

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