Definition of pyramid noun from the Oxford Advanced Learner's Dictionary

     

    pyramid

     noun
    noun
    BrE BrE//ˈpɪrəmɪd//
     
    ; NAmE NAmE//ˈpɪrəmɪd//
     
    Historic buildings
     
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  1. 1a large building with a square or triangular base and sloping sides that meet in a point at the top. The ancient Egyptians built stone pyramids as places to bury their kings and queens. See related entries: Historic buildings
  2. 2 (geometry) a solid shape with a square or triangular base and sloping sides that meet in a point at the top
  3. 3an object or a pile of things that has the shape of a pyramid a pyramid of cans in a shop window
  4. 4an organization or a system in which there are fewer people at each level as you get near the top a management pyramid
  5. Word Origin late Middle English (in the geometrical sense): via Latin from Greek puramis, puramid-, of unknown ultimate origin.
See the Oxford Advanced American Dictionary entry: pyramid

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