Focus on the pronunciation of pyramid
English definition of “pyramid”
/ˈpɪr·əˌmɪd/ n [C]
› 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.