Longman Dictionary of Contemporary English homepage

Date: 1500-1600
Language: Latin
Origin: pyramis, from Greek

pyramid

noun
     
pyramid
pyr‧a‧mid [countable]
1TBB a large stone building with four triangular (=three-sided) walls that slope in to a point at the top, especially in Egypt and Central America
2 [usually singular] a system, society, company etc that is organized in different levels, so that there is a small number of people at the top and a much larger number of people at the bottom:
different levels of the management pyramid
At the bottom of the pyramid are the poor.
3 a pile of objects that have been put into the shape of a pyramid
pyramid of
a pyramid of oranges
4CF an object shaped like a pyramid
pyramidal adjective

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