prismatoid

[ priz-muh-toid ]

/ ˈprɪz məˌtɔɪd /

noun Geometry.

a polyhedron having its vertices lying on two parallel planes.

Nearby words

prism spectrometer, prismatic, prismatic compass, prismatic layer, prismatic telescope, prismatoid, prismoid, prison, prison camp, prison fever, prison psychosis

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. 2019

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 Formsprismatoidal, 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