frustum(redirected from frusta)
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Related to frusta: frustrate
a. 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
b. the part of such a solid contained between two parallel planes intersecting the solid
2. Architect a single drum of a column or a single stone used to construct a pier
The part of a solid between two cutting parallel planes.