可數(shù)名詞：
1.（古埃及的）金字塔
2.【幾何】椎體；棱錐體
3.金字塔形的物體（或一堆東西）
4.金字塔式的組織（或系統(tǒng)） 詞形變化

形容詞 pyramidal

enlarge one"s holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts

increase rapidly and progressively step by step on a broad base

arrange or build up as if on the base of a pyramid

use or deal in (as of stock or commercial transaction) in a pyramid deal

a massive monument with a square base and four triangular sides; begun by Cheops around 2700 BC as royal tombs in ancient Egypt

(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

a polyhedron having a polygonal base and triangular sides with a common vertex

the Great Pyramid 大金字塔

inverted pyramid 倒金字塔(寫(xiě)作結(jié)構(gòu))

spherical pyramid 球面棱錐

obpque pyramid 斜棱錐

petrous pyramid 錐部

pyramid circuit 錐形電路

pyramid column 角錐柱

pyramid control 金字塔式控制

pyramid sign 錐體束征

renal pyramid 腎錐體

pyramid n.[C]1.（古埃及的）金字塔2.【幾何】椎體；棱錐體3.金字塔形的物體（或一堆東西）4.金字塔式的組織（或系統(tǒng)）

macro pyramid 長(zhǎng)軸錐面

pyramid seller 傳銷(xiāo)人員