plane section

Noun
  1. (geometry) the area created by a plane cutting through a solid (synset 108665728)
    referred to in: geometry - the pure mathematics of points and lines and curves and surfaces
    is a type of: area, expanse, surface area - the extent of a 2-dimensional surface enclosed within a boundary
    subtypes: cross section - a section created by a plane cutting a solid perpendicular to its longest axis
    same as: section

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