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prismoid

 - 2 dictionary results

pris⋅moid

  [priz-moid]
Use prismoid in a Sentence
–noun Geometry.
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:
1695–1705; prism + -oid

Related forms:
pris⋅moi⋅dal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To prismoid
pris·moid   (prĭz'moid')   
n.  A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.

[prism + -oid.]
pris·moi'dal (-moid'l) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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