proliferation
//prəˌlɪfəˈreɪʃən//
Noun
proliferationSingular
proliferationsPlural
1
Rapid increase in the number or amount of something.
The proliferation of smartphones has changed the way we communicate.
2
The spread or growth of something, especially something considered undesirable, such as nuclear weapons.
The international community is working to prevent the proliferation of nuclear weapons.