Meaning of “quantum” in the English Dictionary

"quantum" in English

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

"quantum" in American English

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quantumnoun [ C ]

/ˈkwɑn·təm/ plural quanta /ˈkwɑn·tə/

physics the smallest amount of energy that can be measured

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

"quantum" in Business English

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quantumnoun [ C, usually singular ]

uk /ˈkwɒntəm/ us formal

an amount of something:

quantum of sth Earnings depend on the quantum of work done by you.
During this period, the quantum of oil production increased to 16.10 million barrels from 15.84 million barrels last year.

(Definition of “quantum” from the Cambridge Business English Dictionary © Cambridge University Press)