prismatoid

[ priz-muh-toid ]
/ ˈprɪz məˌtɔɪd /

noun Geometry.

a polyhedron having its vertices lying on two parallel planes.

Origin of prismatoid

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

Words nearby prismatoid

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

British Dictionary definitions for prismatoid

prismatoid
/ (ˈprɪzməˌtɔɪd) /

noun

a polyhedron whose vertices lie in either one of two parallel planes Compare 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