pyramid Meaning in Cambridge American English Dictionary
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Meaning of "pyramid" - American English Dictionary

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pyramidnoun [C]

 us   /ˈpɪr·əˌmɪd/
geometry a solid shape with a flat, square base and four flat, triangular sides which slope inward and meet to form a point at the top A pyramid is also a pile of things that has a triangular shape: The acrobats formed a pyramid by standing on each other’s shoulders. biology A pyramid is also a representation of a system with more items at the bottom and fewer at the top, for example, of the effect that one living thing has on another in the food chain .
(Definition of pyramid from the Cambridge Academic Content Dictionary © Cambridge University Press)
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