prismoid

American

[priz-moid] / ˈprɪz mɔɪd /

noun

Geometry.

a solid having sides that are trapezoids and bases or ends that are parallel and similar but not congruent polygons.

prismoid British

/ ˈprɪzmɔɪd /

noun

a prismatoid having an equal number of vertices in each of the two parallel planes and whose sides are trapeziums or parallelograms

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

prismoidal

adjective

Etymology

Origin of prismoid

First recorded in 1695–1705; prism + -oid

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

prismoid

The volume of ore appertaining to any given sample can be considered as a prismoid, the dimensions of which may be stated as follows:— W = Width in feet of ore sampled.

From Principles of Mining Valuation, Organization and Administration by Herbert Hoover

The length of the prismoid base L for any given sample will be a distance equal to one-half the sum of the distances to the two adjacent samples.

From Principles of Mining Valuation, Organization and Administration by Herbert Hoover

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023