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

Derived Forms

• ˌprismaˈtoidal, adjective

Word History and Origins

Origin of prismatoid¹

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

Word History and Origins

Origin of prismatoid¹

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

Example Sentences

A scutoid is more complicated than a prismatoid, which is more complicated than a frusta, which is more complicated than a prism.

From Scientific American