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Meaning of “critical mass” in the English Dictionary

"critical mass" in British English

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critical massnoun [C usually singular or U]

uk   /ˌkrɪt.ɪ.kəl ˈmæs/  us   /ˌkrɪt̬.ɪ.kəl ˈmæs/
(Definition of critical mass from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"critical mass" in Business English

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critical massnoun [U or S]

uk   us  
the ​size or ​number that something ​needs to ​reach before a particular ​change or ​development can ​happen: They believe that they have ​achievedcriticalmass, that is a ​size that is necessary for the ​company to ​survive. The ​challenge is to ​attract a ​criticalmass of ​customers that will ​enable the ​business to ​start making a ​profit.
(Definition of critical mass from the Cambridge Business English Dictionary © Cambridge University Press)
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