pyr·a·mid /ˈpɪrəˌmɪd/
 角錐,金字塔(vt.)(vi.)(使)成金字塔狀,(使)漸增,(使)上漲


 pyr·a·mid /ˈpɪrəˌmɪd/ 名詞
 角錐形的,錐體


 pyramid
 錐形;角錐體


 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 quoted at 100, holds it till it rises to 105, and then uses the paper profit to buy 50 shares more, etc. The series of operations constitutes a pyramid.  A similar process of reinvesting gains or winnings (as of a gamble), but not involving operation on margin, is called a parlay.


 Pyr·a·mid n.
 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.
 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.
 3. pl. Billiards The game of pool in which the balls are placed in the form of a triangle at spot. [Eng.]
 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.


 Pyr·a·mid, v. t. Speculation To use, or to deal in, in a pyramiding transaction. See Pyramid, v. i.

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 pyramid
      n 1: a polyhedron having a polygonal base and triangular sides
           with a common vertex
      2: (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
      3: a massive memorial with a square base and four triangular
         sides; built as royal tombs in ancient Egypt [syn: {Great
         Pyramid]
      v 1: enlarge one's holdings on an exchange on a continued rise by
           using paper profits as margin to buy additional amounts
      2: use or deal in (as of stock or commercial transaction) in a
         pyramid deal
      3: arrange or build up as if on the base of a pyramid
      4: increase rapidly and progressively step by step on a broad
         base