Pyramid
Pyramid Pyr"a*mid, n. [L. pyramis, -idis, fr. Gr. ?, ?, of Egyptian origin: cf. F. pyramide.] [1913 Webster] 1. A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or edifice of this shape. [1913 Webster]

2. (Geom.) A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base. [1913 Webster]

3. pl. (Billiards) The game of pool in which the balls are placed in the form of a triangle at spot. [Eng.] [1913 Webster]

4. (Finance) a fraudulent investment scheme in which the manager promises high profits, but instead of investing the money in a genuine profit-making activity, uses the money from later investors to pay the profits to earlier investors; -- also called {pyramid scheme} or {pyramid operation}. This process inevitably collapses when insufficient new investors are available, leaving the later investors with total or near-total losses of their investments. The managers usually blame government regulations or interference for the collapse of the scheme, rather than admit fraud. [PJC]

{Altitude of a pyramid} (Geom.), the perpendicular distance from the vertex to the plane of the base.

{Axis of a pyramid} (Geom.), a straight line drawn from the vertex to the center of the base.

{Earth pyramid}. (Geol.) See {Earth pillars}, under {Earth}.

{Right pyramid} (Geom.) a pyramid whose axis is perpendicular to the base. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

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  • Pyramid — Saltar a navegación, búsqueda Pyramid Álbum de The Alan Parsons Project Publicación Junio 1978 Grabación Septiembre 1977 Febrero 1978 Ab …   Wikipedia Español

  • pyramid — pyr·a·mid 1 / pir ə ˌmid/ n 1: a group of holding companies superimposed on one another to give those in control of the top holding company control over all of the companies with a small investment 2: the series of operations involved in… …   Law dictionary

  • pyramid — [pir′ə mid] n. [L pyramis (gen. pyramidis) < Gr, pyramid: replaced ME piramis, also < L] 1. any huge structure with a square base and four sloping, triangular sides meeting at the top, as those built by the ancient Egyptians for royal tombs …   English World dictionary

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  • Pyramid — Pyr a*mid, v. i. (Speculation) To enlarge one s holding or interest in a series of operations on a continued rise or decline by using the profits to buy or sell additional amounts on a margin, as where one buys on a 10% margin 100 shares of stock …   The Collaborative International Dictionary of English

  • Pyramid — Pyr a*mid, v. t. (Speculation) To use, or to deal in, in a pyramiding transaction. See {Pyramid}, v. i. [Webster 1913 Suppl.] …   The Collaborative International Dictionary of English

  • pyramid — pyr‧a‧mid [ˈpɪrəmɪd] noun [countable] ORGANIZATIONS an organization with only a few people at the top, who have a lot of power and influence over those below them * * * pyramid UK US /ˈpɪrəmɪd/ noun [C] ► an organization or system that has few… …   Financial and business terms

  • pyramid — 1550s (earlier in L. form piramis, late 14c.), from Fr. pyramide (O.Fr. piramide, 12c.), from L. pyramides, pl. of pyramis one of the pyramids of Egypt, from Gk. pyramis (pl. pyramides), apparently an alteration of Egyptian pimar pyramid. Related …   Etymology dictionary

  • pyramid — ► NOUN 1) a monumental stone structure with a square or triangular base and sloping sides that meet in a point at the top, especially one built as a royal tomb in ancient Egypt. 2) Geometry a polyhedron of which one face is a polygon and the… …   English terms dictionary

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