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Glite Dictionary
prismoid

prismoid

9.9
A solid with two parallel polygons with the same number of sides and side faces that are trapezoids or parallelograms
  • noun
  • /ˈprɪzˌmɔɪd/
  • Specialized
: prismoide
  • To find the volume of a prismoid, use the prismoidal formula.

Examples

  • The shape of the building resembled a prismoid with its parallel polygonal bases.

  • The prismoid has two parallel bases.

  • The engineer modeled the bridge support as a prismoid to simplify the calculations.

  • Can you identify a prismoid in this diagram?

  • The engineer modeled the bridge support as a prismoid to simplify the calculations.

  • The shape of the building resembled a prismoid with its parallel polygonal bases.

  • To find the volume of a prismoid, use the prismoidal formula.

Surface Forms

prismoid singular
prismoids plural

Morphology

prismoid = prism (semi-transparent) = prism + oid

The word is formed from 'prism' + suffix '-oid' meaning 'resembling or related to a prism', but the precise geometric conditions (trapezoidal/parallelogram lateral faces) are technical and not fully inferable by an average learner.

Etymology

The word prismoid comes from prism, a solid with two equal, parallel flat ends, and the ending -oid, which means 'like' or 'shape'. So a prismoid is a solid 'like' a prism: it has two parallel many-sided flat ends and other faces that are four-sided shapes.