Dictionary.net

growth by the rapid multiplication of parts

a rapid increase in number (especially a rapid increase in the number of deadly weapons); "the proliferation of nuclear weapons"

growth by the rapid multiplication of parts

Exuberant growth by reproduction of similar cells.

Prolification ; increase by frequent and repeated reproduction of any kind.

The formation and reproduction of cells.

The condition of being proliferous; growth by the multiplication of component elements (see cell genesis); in pathology, the continuous growth of cells in abnormal amount or direction. [Lat.]