pyramids

• a massive monument with a square base and four triangular sides
• a polyhedron having a polygonal base and triangular sides with a common vertex
• (stock market) a series of transactions in which the speculator increases his holdings by using the rising market value of those holdings as margin for further purchases
• enlarge one´s holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts
• use or deal in (as of stock or commercial transaction) in a pyramid deal
• arrange or build up as if on the base of a pyramid
• increase rapidly and progressively step by step on a broad base

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