prismatoid
[ priz-muh-toid ]
/ ˈprɪz məˌtɔɪd /
noun Geometry.
a polyhedron having its vertices lying on two parallel planes.
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a person who acts as though he or she knows everything and who dismisses the opinions, comments, or suggestions of others.
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a well-intentioned but naive and often ineffectual social or political reformer.
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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for prismatoid
prismatoid
/ (ˈprɪzməˌtɔɪd) /
noun
a polyhedron whose vertices lie in either one of two parallel planesCompare prism (def. 3), prismoid
Derived forms of prismatoid
prismatoidal, adjectiveWord Origin for prismatoid
C19: from Greek prismatoeidēs shaped like a prism; see prism, -oid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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