Proliferation is a rapid increase in numbers. Nuclear proliferation, the proliferation of apps, cell proliferation.
In arms control it means the spread of weapons to more states, and the treaty against it is the central agreement of the nuclear age. In biology it is the multiplication of cells, which is exactly what cancer is.
1nounproliferationA rapid increase in numbers.
“The last decade has seen a proliferation of coffee shops on every high street.”
proliferation is an increase.
French
prolifération
English, today
proliferation
Borrowed from French prolifération.
Etymology from Wiktionary, CC BY-SA