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pyramid

pyramid /ˈpirəˌmɪd/ noun
plural pyramids
pyramid
/ˈpirəˌmɪd/
noun
plural pyramids
Britannica Dictionary definition of PYRAMID
[count]
: 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
: a shape, object, or pile that is wide near the bottom and narrows gradually as it reaches the top see picture at geometry
: something that resembles a pyramid in the way its parts are arranged or organized

— pyramidal

/pəˈræmədl̟/ adjective