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English definition of “rate”

rate

noun [C] (MEASUREMENT)   /reɪt/
a measurement of the speed at which something happens or changes, or the number of times it happens or changes, within a particular period: the rate of change/decay rates of digestion/oxygenation We have relatively low unemployment rates these days. If we improve studentsself-esteem, we could reduce the dropout rate.
(Definition of rate noun (MEASUREMENT) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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