- 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.
- A construction in the shape of a pyramid, usually with a square or rectangular base.
- (geometry) A solid with triangular lateral faces and a polygonal (often square or rectangular) base.
- A pyramid scheme.
Etymology: French pyramide â Old French piramide â Latin pyramis â Greek ', possibly from a corruption of an Ancient Egyptian phrase or expression (a tentative suggestion: pri-n-mr, "go to the pyramid?", maybe a question asked of ancient Greek tourists), OR from Ancient Egyptian Pir E Mit, "Division of Ten" or "Division of Number" or "Division of Perfection".The Ancient Egyptian word for pyramid is mr'''.
- Dutch: pyramide
- French: pyramide
- German: Pyramide
- Spanish: pirí¡mide
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