[ an-tee-pruh-lif-uh-rey-shuh n ]
/ ˌæn ti prəˌlɪf əˈreɪ ʃən /


opposing an increase in nuclear weapons, especially in allowing additional countries to obtain them.
taking or containing measures to curb nuclear proliferation: to sign the antiproliferation treaty.

Origin of antiproliferation

First recorded in 1975–80; anti- + proliferation Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019