Pyramid
/'pirəmid/
Học thuậtThân thiện
Definition
Noun:
- A massive structure with a square base and four triangular sides meeting at a point: A "pyramid" is a monumental stone structure, especially those built in ancient Egypt as royal tombs.
- A geometric solid with a polygonal base and triangular faces meeting at a common vertex (the apex): In geometry, a "pyramid" is a polyhedron with this specific shape.
- A system or structure resembling a pyramid in shape or organization: This can refer to anything that widens progressively from the top down, such as a hierarchical organization or a scheme.
Verb:
- To increase or progress rapidly in successive stages: To "pyramid" means to build up or increase something rapidly on a broad base, often in a step-like manner.
- To arrange or assemble in the shape of a pyramid: To "pyramid" is to stack or organize items so they form a pyramid shape.
- To engage in a financial strategy using paper profits as leverage: In finance, to "pyramid" means to use the paper profits from an investment as margin to purchase more of it.
Examples of Usage
Noun:
- The Great Pyramid of Giza is one of the Seven Wonders of the Ancient World.
- A square pyramid has a square base and four triangular faces.
- The company had a strict management pyramid.
Verb:
- The company managed to pyramid its profits over a few short years.
- She pyramided the cans at the grocery store for a display.
- He pyramided his stock holdings during the bull market.
Advanced Usage
"Pyramid scheme": A fraudulent business model where returns are paid to earlier investors using the capital from newer investors, not from profit.
- Many people lost their savings after investing in what turned out to be a pyramid scheme.
"Food pyramid": A nutritional diagram shaped like a pyramid, showing the recommended intake for different food groups.
- The old food pyramid placed grains at the base.
Variants and Related Words
Pyramidal (adj): Having the shape or form of a pyramid.
- The mountain had a pyramidal peak.
Pyramidion (n): The capstone of an Egyptian pyramid or an obelisk.
Synonyms
- Noun: Monument, ziggurat, tetrahedron (for triangular pyramid), hierarchy.
- Verb: Accumulate, amass, build up, stack.
Related Phrasal Verbs/Constructions
- "Pyramid up": To build or accumulate in a pyramidal fashion. (Note: This is a less common construction based on the verb).
- The children pyramided up the building blocks until they fell over.
Related Idioms
- "The top of the pyramid": Refers to the highest level of a hierarchy or organization.
- Very few people ever reach the top of the corporate pyramid.
Noun
- 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
Verb
- 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
- enlarge one's holdings on an exchange on a continued rise by using paper profits as margin to buy additional amounts