Meaning of prismoid

pris•moid

Pronunciation: (priz'moid), [key]
— n. Geom.
  1. a solid having sides that are trapezoids and bases or ends that are parallel and similar but not congruent polygons. Cf.(def. 2).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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