pyramidpyramid /ˈpɪrəmɪd/ ●●○ noun [countable] 1
math, geometry a solid object that has a four-sided base, and four sides made up of triangles that slope to a point at the top2social studies, history a large stone building in the shape of a pyramid, found especially in Egypt and Central America3[usually singular] a system or organization in which a small number of people have power or influence over a much larger number of people: The uneducated poor are at the bottom of the social pyramid.4a pile of objects that have been put into the shape of a pyramid: pyramid of a pyramid of cans—pyramidal /ˌpɪrəˈmɪdl◂/ adjective
math, geometry a solid object that has a four-sided base, and four sides made up of triangles that slope to a point at the top2social studies, history a large stone building in the shape of a pyramid, found especially in Egypt and Central America3[usually singular] a system or organization in which a small number of people have power or influence over a much larger number of people: The uneducated poor are at the bottom of the social pyramid.4a pile of objects that have been put into the shape of a pyramid: pyramid of a pyramid of cans—pyramidal /ˌpɪrəˈmɪdl◂/ adjective