Definition of “ferment” - English Dictionary

“ferment” in British English

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(Definition of “ferment” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“ferment” in American English

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fermentverb [ I/T ]

us /fərˈment/

biology, chemistry to change chemically through the action of living substances, such as yeast or bacteria, or to use a substance to produce a chemical change

fermentnoun [ U ]

us /ˈfɜr·ment/

a state of confusion or excited expectation, esp. because of suddenly changing conditions:

He was a central figure in the intellectual ferment of his time.

(Definition of “ferment” from the Cambridge Academic Content Dictionary © Cambridge University Press)