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English definition of “ferment”

ferment

verb [I, T]     /fəˈment/
If food or drink ferments, or if you ferment it, the sugar in it changes into alcohol because of a chemical process : The wine ferments in barrels .Physical and chemical processes
fermentation     /ˌfɜːmenˈteɪʃən/ noun [U]
(Definition of ferment verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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