pyr·a·mid 
/ˈpirəˌmɪd/ noun
plural pyr·a·mids /ˈpirəˌmɪd/ noun [count] 1 a : a very large structure built especially in ancient Egypt that has a square base and four triangular sides which form a point at the top
▪ the ancient pyramids of Egypt
b : a shape, object, or pile that is wide near the bottom and narrows gradually as it reaches the top
▪ a pyramid of apples/oranges — see picture at geometry 2 : something that resembles a pyramid in the way its parts are arranged or organized
▪ the social pyramid ▪ (US) the food pyramid [=a drawing or chart that is shaped like a pyramid and that shows the type of food you should eat for a healthy diet]
▪ the ancient pyramids of Egypt
b : a shape, object, or pile that is wide near the bottom and narrows gradually as it reaches the top
▪ a pyramid of apples/oranges — see picture at geometry
▪ the social pyramid ▪ (US) the food pyramid [=a drawing or chart that is shaped like a pyramid and that shows the type of food you should eat for a healthy diet]
— py·ra·mi·dal /pəˈræmədl̟/ adjective
▪ a pyramidal structure
/pəˈræmədl̟/ adjective ▪ a pyramidal structure
