What is "pyramid"

Pyramid \Pyr"a*mid\, n. [L. pyramis, -idis, fr. Gr. ?, ?, of Egyptian origin: cf. F. pyramide.]

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.]

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.

   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.

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 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.

Pyramid \Pyr"a*mid\, v. t. (Speculation) To use, or to deal in, in a pyramiding transaction. See Pyramid, v. i.

1550s (earlier in Latin form piramis, late 14c.), from French pyramide (Old French piramide "obelisk, stela," 12c.), from Latin pyramides, plural of pyramis "one of the pyramids of Egypt," from Greek pyramis (plural pyramides) "a pyramid," apparently an alteration of Egyptian pimar "pyramid." Financial sense is from 1911. Related: Pyramidal.

n. 1 An ancient massive construction with a square or rectangular base and four triangular sides meeting in an apex, such as those built as tombs in Egypt or as bases for temples in Mesoameric

1. 2 A construction in the shape of a pyramid, usually with a square or rectangular base. 3 (context geometry English) A solid with triangular lateral faces and a polygonal (often square or rectangular) base. 4 (context UK dated English) The game of pool in which the balls are placed in the form of a triangle at spot. 5 A pyramid scheme. v

2. 1 (context transitive genetics English) To combine (a series of genes) into a single genotype. 2 (context intransitive English) To employ, or take part in, a pyramid scheme.

1. v. 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

1. n. 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]

Pyramid is a solitaire game where the object is to get all the cards from the pyramid to the foundation.

A pyramid is a structure with triangular lateral surfaces converging to an apex.

Pyramid may also refer to:

Pyramid is a cigarette brand manufactured by Liggett Group, Inc., based in Mebane, North Carolina. Pyramid was introduced in 1988 as the first "branded discount" cigarette. It is available in 11 versions as of February, 2006.

A pyramid (from ) is a structure whose outer surfaces are triangular and converge to a single point at the top, making the shape roughly a pyramid in the geometric sense. The base of a pyramid can be trilateral, quadrilateral, or any polygon shape, meaning that a pyramid has at least three outer triangular surfaces (at least four faces including the base). The square pyramid, with square base and four triangular outer surfaces, is a common version.

A pyramid's design, with the majority of the weight closer to the ground, and with the pyramidion on top means that less material higher up on the pyramid will be pushing down from above. This distribution of weight allowed early civilizations to create stable monumental structures. It has been demonstrated that the common shape of the pyramids of antiquity, from Egypt to Central America, represents the dry-stone construction that requires minimum human work.

Pyramids have been built by civilizations in many parts of the world. For thousands of years, the largest structures on Earth were pyramids—first the Red Pyramid in the Dashur Necropolis and then the Great Pyramid of Khufu, both of Egypt, the latter is the only one of the Seven Wonders of the Ancient World still remaining. Khufu's Pyramid is built mainly of limestone (with large red granite blocks used in some interior chambers), and is considered an architectural masterpiece. It contains over 2,000,000 blocks ranging in weight from to and is built on a square base with sides measuring about 230 m (755 ft), covering 13 acres. Its four sides face the four cardinal points precisely and it has an angle of 52 degrees. The original height of the Pyramid was 146.5 m (488 ft), but today it is only 137 m (455 ft) high, the 9 m (33 ft) that is missing is due to the theft of the fine quality white Tura limestone covering, or casing stones, for construction in Cairo. It is still the tallest pyramid. The largest pyramid by volume is the Great Pyramid of Cholula, in the Mexican state of Puebla.

Pyramid is an American television game show franchise that has aired several versions domestically and internationally. The original series, The $10,000 Pyramid, debuted March 26, 1973, and spawned seven subsequent Pyramid series (most with a full title format matching the original series, with the title reflecting the top prize increase from $10,000, $20,000, $25,000, $50,000 to $100,000 over the years). The game features two contestants, each paired with a celebrity. Contestants attempt to guess a series of words or phrases based on descriptions given to them by their teammates. The title refers to the show's pyramid-shaped gameboard, featuring six categories arranged in a triangular fashion. The various Pyramid series have won a total of nine Daytime Emmys for Outstanding Game Show, second only to Jeopardy!, which has won thirteen.

Dick Clark is the host most commonly associated with the show, having hosted every incarnation from 1973 to 1988, with the exception of the original version of The $25,000 Pyramid, which aired in weekly syndication from 1974 until 1979 and was hosted by Bill Cullen. The $100,000 Pyramid was revived for a brief 1991 run with John Davidson hosting. In 2002, the series was revived as simply Pyramid, with Donny Osmond hosting for two seasons. GSN's The Pyramid was hosted by Mike Richards and aired for a single forty-episode season before it was cancelled in 2012. Reruns of The (New) $25,000 Pyramid and The Pyramid are currently shown on GSN. A revival of The $100,000 Pyramid debuted on June 26, 2016, on ABC with Michael Strahan as host.

Pyramid is a gaming magazine, publishing articles primarily on role-playing games, but including board games, card games, and other sorts of games. It began life in 1993 as a print publication of Steve Jackson Games for its first 30 issues, though it has been published on the Internet since March 1998. Print issues were bimonthly; the first online version published new articles each week; the second online version is monthly. Pyramid is headquartered in Austin, Texas. It replaced Steve Jackson Games' previous magazine Roleplayer.

Pyramid features general gaming articles by freelance authors, as well as Designer's Notes by Steve Jackson Games product developers, industry news, cartoons, and gaming product reviews. Although articles tend to concentrate on Steve Jackson Games products such as GURPS, it has published articles on other games such as d20 System, Talisman, Nobilis, Hero System, and has featured various comic strips and single-panel cartoons (currently Murphy's Rules). Steve Jackson Games also briefly published another online magazine, d20 Weekly for several months using a very similar model to that of Pyramid. However, the venture was not a success, and was eventually folded into a slightly expanded Pyramid.

The online subscription system used for Pyramid also granted access to subscriber forums, a dedicated chat server, and occasional pre-publication playtest material for Steve Jackson Games and other companies' products. In 2008 this was changed: Pyramid is available as a PDF download from e23, and the subscriber forums have been discontinued. Access to playtest material is contingent on participation in an actual playtest.

Pyramid or beeramid is a card game that is most commonly used as a drinking game requiring 1 standard deck of playing cards.

Pyramid, or pyramid representation, is a type of multi-scale signal representation developed by the computer vision, image processing and signal processing communities, in which a signal or an image is subject to repeated smoothing and subsampling. Pyramid representation is a predecessor to scale-space representation and multiresolution analysis.

Pyramid is the third album by progressive rock band The Alan Parsons Project, released in 1978. It is a concept album centred on the pyramids of Giza. At the time the album was conceived, interest in pyramid power and Tutankhamun was widespread in the US and the UK. Pyramid was nominated for the 1978 Grammy Award for Best Engineered Album, Non-Classical. Liner notes read "From the rise and fall of an ancient dynasty, to the quest for a key to unlock the secrets of the universe, this album seeks to amplify the haunting echoes of the past and explore the unsolved mysteries of the present. Pyramid...the last remaining wonder of the ancient world."

The album also dabbles with new wave, a genre that was emerging in Britain around the time of the album's recording. Many progressive and soft rock artists incorporated this style into their albums during the time spanning from late 1977 to 1979. In this album, the genre is mildly evident, through rhythm, in songs such as "Can't Take it with You" and immensely so in others such as "Pyramania".

bgcolor=#e7dcc3 colspan=2|Regular-based right pyramids

align=center colspan=2|

bgcolor=#e7dcc3| Conway polyhedron notation

bgcolor=#e7dcc3| Schläfli symbol

bgcolor=#e7dcc3|Faces

bgcolor=#e7dcc3|Edges

bgcolor=#e7dcc3|Vertices

bgcolor=#e7dcc3| Symmetry group

bgcolor=#e7dcc3| Rotation group

bgcolor=#e7dcc3| Dual polyhedron

bgcolor=#e7dcc3|Properties

In geometry, a pyramid is a polyhedron formed by connecting a polygonal base and a point, called the apex. Each base edge and apex form a triangle, called a lateral face. It is a conic solid with polygonal base. A pyramid with an n-sided base will have vertices, faces, and 2n edges. All pyramids are self-dual.

A right pyramid has its apex directly above the centroid of its base. Nonright pyramids are called oblique pyramids. A regular pyramid has a regular polygon base and is usually implied to be a right pyramid.

When unspecified, a pyramid is usually assumed to be a regular square pyramid, like the physical pyramid structures. A triangle-based is more often called a tetrahedron.

Among oblique pyramids, like acute and obtuse triangles, a pyramid can be called acute if its apex is above the interior of the base and obtuse if its apex is above the exterior of the base. A right-angled pyramid has its apex above an edge or vertex of the base. In a tetrahedron these qualifiers will change based on which face is considered the base.

Pyramids are a subclass of the prismatoids. Pyramids can be doubled into bipyramids by adding a second offset point on the other side of the base plane.

The Pyramid is a low hill ( elevation 386 m) in the city of Maribor, Slovenia. It is a popular excursion spot, affording a good view of the city. An ascent takes 15 to 30 minutes.

Pyramid is an American experimental, indie-rock band from North Carolina. Music from their self-released album, "The First American", was used in two David Gordon Green films, All the Real Girls and Undertow. Pyramid also composed the music for Jody Hill's The Foot Fist Way, co-composed Shotgun Stories for Jeff Nichols, and added additional score to Craig Zobel’s Great World of Sound.

Pyramid is an Australian children's quiz show screening on the Nine Network hosted by Shura Taft. It is co-produced by Sony Pictures Television (the owner of the franchise) and Sydney-based SLR Productions. It began broadcasting on 1 September 2009 and is filmed in front of a live studio audience. It involves two teams competing in games of "vocal charades". The show is based on the 1979 United States game show The Junior Partner Pyramid, a children's variant of the Sony Pictures Television Pyramid franchise.

In 2013, the series moved to GO! with a new host, Graham Matters, and a strong focus on education and interactive media, with the release of the Pyramid Digital App.

Pyramid is an album by jazz saxophonist Cannonball Adderley recorded at Fantasy Studios in Berkeley, California in 1974 featuring performances by Adderley's Quintet with Nat Adderley, Hal Galper, Walter Booker and Roy McCurdy with guest appearances by Phil Upchurch, George Duke, and Jimmy Jones.

Pyramid is an album by American jazz group the Modern Jazz Quartet featuring performances recorded in 1959-60 and released on the Atlantic label.

Pyramid is a punk rock band from Providence, Rhode Island, composed of Connie Strychasz ( vocals, drums), Florence Wallis ( bass), Mackensie Elisabeth ( guitar) and Thea Shaheen ( ukulele). Members have previously or concurrently played with other Providence bands including The Low Anthem. Founded in 2014, Pyramid has built a strong following in the town thanks to its memorable live shows. A series of demos were released on Soundcloud, and a debut album is forthcoming.

"Pyramid" is the second single of Filipina pop and R&B singer Charice and the lead single from her self-titled debut album. This song features vocals from British Virgin Islands singer Iyaz, was written by Niclas Molinder, Joacim Persson, Johan Alkenäs and R&B singer-songwriter Lyrica Anderson, and produced by Twin and Alke. A remix was said to be released on iTunes on February 16, 2010 which was later changed to February 23, the same day as the release of the album version. But the album version was delayed and was released on March 2. It is Charice's first number one single. Pyramid is a midtempo pop ballad with lyrics that metaphorically describes the strength of a relationship. "Pyramid" peaked at the Billboard Hot 100 chart at number 56, making Charice the second Filipino singer to enter the chart since Jaya's debut single "If You Leave Me Now" peaked on the Billboard Hot 100 at number 44 in 1990.

Pyramid had already received airplay before it was released to iTunes. It aired on 104.3 in Las Vegas before its release as a single. The album version was released to U.S. mainstream radio on March 15, 2010. It is her first single to achieve mainstream airplay. The song was sung in Simlish for The Sims 3: Ambitions, an expansion pack for the strategic life simulation computer game, The Sims 3.