plural of pyramidal number

plural of pyramidal neuron

plural of pyramidal tract

A tower made of people standing or kneeling on top of each other. / (circus) A formation of triangular shape with one or a small number of performers supporting a large number of other performers.

(anatomy) A major collection of axons that transmits nerve impulses from the motor cortex to the spinal cord.

An illicit money-making investment scheme whereby early investors are paid primarily or wholly by later investors. Eventually all such schemes fail to the detriment of recent (later) investors.

plural of pyramid scheme

(geometry) A three-dimensional geometric figure with a square base and four triangular sides that connect at one point. An example is the Great Pyramid of Giza.

A three-dimensional figure with four triangular bases.

A pyramid composed of several stacked platforms or mastabas so that each face has steps.