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prismatoid

[ priz-muh-toid ]
/ ˈprɪz məˌtɔɪd /
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noun Geometry.

a polyhedron having its vertices lying on two parallel planes.

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Origin of prismatoid

1855–60; <Greek prīsmat- (stem of prîsma) prism + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for prismatoid

prismatoid
/ (ˈprɪzməˌtɔɪd) /

noun

a polyhedron whose vertices lie in either one of two parallel planesCompare prism (def. 3), prismoid

Derived forms of prismatoid

prismatoidal, adjective

Word Origin for prismatoid

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