nonproliferation /ˌnɑːnprəˌlɪfəˈreɪʃən/ noun /ˌnɑːnprəˌlɪfəˈreɪʃən/
noun
Learner's definition of NONPROLIFERATION
[noncount]
: the act of stopping the production of nuclear and chemical weapons or of limiting the number of nuclear and chemical weapons in the world防止核武器扩散；防止化学武器扩散