prismoid

play
noun pris·moid \ˈpriz-ˌmȯid\

Definition of prismoid

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

prismoidal

play \priz-ˈmȯi-dəl\ adjective

1881

First Known Use of prismoid

1881

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a trip made at another's expense

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