non·pro·lif·er·a·tion 
/ˌnɑ:nprəˌlɪfəˈreɪʃən/ noun
/ˌnɑ:nprəˌlɪfəˈreɪʃən/ noun [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
▪ a conference to discuss nuclear nonproliferation ▪ a nonproliferation treaty
▪ a conference to discuss nuclear nonproliferation ▪ a nonproliferation treaty
