non·​pro·​lif·​er·​a·​tion ˌnän-prə-ˌli-fə-ˈrā-shən How to pronounce nonproliferation (audio)
: providing for the stoppage of proliferation (as of nuclear arms)
nonproliferation treaty
nonproliferation noun

Example Sentences

Recent Examples on the Web But nuclear experts say reprocessing faces economic and nonproliferation concerns and does not prevent the production of nuclear waste. Josh Siegel, Washington Examiner, 24 Feb. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nonproliferation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1964, in the meaning defined above

Time Traveler
The first known use of nonproliferation was in 1964

Dictionary Entries Near nonproliferation

Cite this Entry

“Nonproliferation.” Dictionary, Merriam-Webster, Accessed 26 Nov. 2022.

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