plane section

Definitions of plane section
  1. noun
    (geometry) the area created by a plane cutting through a solid
    synonyms: section
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    cross section
    a section created by a plane cutting a solid perpendicular to its longest axis
    a vertical section of the Earth's crust showing the different horizons or layers
    type of:
    area, expanse, surface area
    the extent of a 2-dimensional surface enclosed within a boundary
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