Proliferation
/prˌoʊlɪfəˈreɪʃən/
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Definition
(noun) The process by which an organism produces others of its kind; breeding, propagation, procreation, reproduction.
Sentence Examples
The proliferation of Internet usage has given birth to a new generation of young people.
Nuclear proliferation is the spread of nuclear weapons.
CEFR Practice Quiz
The ____ of nuclear weapons remains one of the greatest threats to global security.