Definition of prismoid in English:

prismoid

Syllabification: pris·moid
Pronunciation: /ˈprizˌmoid
 
/

noun

Geometry
  • A solid geometric figure like a prism, in which the end faces have the same number of sides but are not equal.

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Pronunciation: ˈmālˌsträm
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a powerful whirlpool in the sea