pyramid

  1. Noun.  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 Mesoamerica.
  2. Noun.  A construction in the shape of a pyramid, usually with a square or rectangular base.
  3. Noun.  (geometry) A solid with triangular lateral faces and a polygonal (often square or rectangular) base.
  4. Noun.  A pyramid scheme.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.