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Look up pyramid in Wiktionary, the free dictionary.

A pyramid is any three-dimensional structure where the upper surfaces are triangular and converge on one point.

Pyramid may refer to:

• Pyramid (geometry), a conic solid with polygonal base
• Egyptian pyramids, Pyramids of Egypt
• Human pyramid, a stunt usually performed by circus artists or by amateurs
• Population pyramid, in demography, two back-to-back bar graphs, one showing the number of males and one showing females in a particular population in five-year age groups
• Food guide pyramid, informally known as the food pyramid, a US-American nutrition guide
• Pyramid of medulla oblongata, a structure in the medulla oblongata
• a hierarchical structure of some organizations

In entertainment:

• Pyramid (solitaire), a single player (solitaire) card game played with a standard 52-card deck
• Pyramid 2000, an interactive fiction text adventure game
• Pyramid (game show), first known as The $10,000 Pyramid, played mainly from the 1970s to 1980s
• Pyramid (card game), played by Viper pilots on the Battlestar Galactica television show
• Pyramid (video game), a Nintendo Entertainment System game
• Pyramid (sport), played in the modern Battlestar Galactica television series (in the original show, referred to as "Triad")
• Pyramid (chess), a three-dimensional chess variant played in the Dune universe
• Pyramid (magazine), an online magazine publishing role-playing and other game articles, published by Steve Jackson Games
• Pyramids (Discworld), a Discworld novel by Terry Pratchett

In sport:

• National League System, called Pyramid system or non-League pyramid for English football below full-time professional level
• Pyramid Arena in Memphis, Tennessee

In music:

• Pyramid (album), a concept album by The Alan Parsons Project, released in 1978
• Pyramid (Modern Jazz Quartet album), a 1959 album by American jazz band Modern Jazz Quartet released in 1959
• "Pyramid Song", a 2001 single by British experimental rock band Radiohead
• Pyramid Rock Festival, an annual music festival held on December 30 and 31 located in Victoria, Australia
• "Pyramid" (song), a song by Australian hard rock band Wolfmother from the 2005 album Wolfmother
• The Pyramids (band), a Surf Rock Band from California

In geography:

• Ball's Pyramid, a small island in the Tasman Sea, Australia
• Pyramid (Unalaska), a mountain on the island of Unalaska
• Pyramid Lake, a lake in Nevada
• Pyramid Lake (California), an artificial lake in California

In companies:

• Pyramid (film distributor), an overseas Tamil film distributor
• Portsmouth Pyramids Centre, also known as Pyramids, a water park and in Portsmouth, UK
• Pyramid Books, a New York publishing company
• Pyramid Breweries, Inc., a Seattle-based microbrewery
• Pyramid Building Society, Australian building society bankrupted in 1990
• Pyramid scheme, a non-sustainable business model, where you earn money by enrolling other people into the scheme.
• Pyramid Technology, a US minicomputer company that existed from 1981 to 1995
• The Pyramid Company, US shopping mall developer

In numismatics: A "Pyramid"- triangular coin worth 25p, legal tender in the Isle of Man since December 2007

• List of ancient pyramids by country
• Pyramidology, various pseudoscientific speculations regarding supernatural powers of pyramids
• Bipyramid
• Trigonal pyramid (chemistry)

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