pyr*a*mid \ ˈpir-ə-ˌmid \
  • an ancient massive structure found especially in Egypt having typically a square ground plan, outside walls in the form of four triangles that meet in a point at the top, and inner sepulchral chambers
  • a structure or object of similar form
  • a polyhedron having for its base a polygon and for faces triangles with a common vertex


pyramid \
circa 1900{ds|i|1||}
  • to speculate (as on a security or commodity exchange) by using paper profits as margin for additional transactions
  • to increase rapidly and progressively step by step on a broad base
  • to arrange or build up as if on the base of a pyramid

pyramid scheme

pyramid scheme \
  • a usually illegal operation in which participants pay to join and profit mainly from payments made by subsequent participants

Pyramid Lake:g

geographical name
Pyramid Lake \
  • lake 30 miles (48 kilometers) long in northwestern Nevada northeast of Reno

food pyramid

food pyramid \
  • an ecological hierarchy of food relationships in which a chief predator is at the top, each level preys on the next lower level, and usually green plants are at the bottom
  • a pyramid-shaped depiction of recommended daily servings for different food groups (such as vegetables, grains, dairy products, and meats)

renal pyramid

renal pyramid \
  • any of the somewhat triangular- or wedge-shaped masses of tissue of the inner medulla region of the kidney that project as the renal papillae into the renal pelvis, and have a striated appearance due to the presence of collecting tubules and collecting ducts
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