Frustum (noun) Definition, Meaning & Examples

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noun, plural frus·tums, frus·ta [fruhs-tuh]. /ˈfrʌs tə/. Geometry.
  1. the part of a conical solid left after cutting off a top portion with a plane parallel to the base.
  2. the part of a solid, as a cone or pyramid, between two usually parallel cutting planes.
noun plural -tums or -ta (-tə)
  1. geometry
    • the part of a solid, such as a cone or pyramid, contained between the base and a plane parallel to the base that intersects the solid
    • the part of such a solid contained between two parallel planes intersecting the solid
  2. a single drum of a column or a single stone used to construct a pier
Frustum (noun) Definition, Meaning & Examples

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