prismoid

noun
pris·moid | \ˈpriz-ˌmȯid \

Definition of prismoid 

: a prismatoid whose parallel bases have the same number of sides

Other Words from prismoid

prismoidal \priz-ˈmȯi-dᵊl \ adjective

First Known Use of prismoid

1881, in the meaning defined above

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The first known use of prismoid was in 1881

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