- a solid having sides that are trapezoids and bases or ends that are parallel and similar but not congruent polygons.Compare prism(def 2).
Origin of prismoid
First recorded in
1695–1705; prism +
-oidDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for prismoid- a prismatoid having an equal number of vertices in each of the two parallel planes and whose sides are trapeziums or parallelograms
Word Origin for prismoid
C18: from French prismoïde; see prism, -oid
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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