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quantum

 
 
/ˈkwɒntəm/ noun [C, usually singular] formal

Definition

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 noun from the Cambridge Business English Dictionary © Cambridge University Press)

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