Meaning of -MENT in English

-MENT

~ is added to some verbs to form nouns that refer to actions, processes, or states.

...shortly after the commencement of the service.

...the enrichment of uranium.

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Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .