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English definition of “Pareto optimal”

Pareto optimal

adjective     ECONOMICS, WORKPLACE, PRODUCTION
using or dividing resources (= time , money , employees , etc.) in a way that results in a situation where nobody is doing worse than before, and at least one person is doing better : If the operation is not yet Pareto optimal , this is because people who are powerful in the inefficient system are reluctant to change .
(Definition of Pareto optimal adjective from the Cambridge Business English Dictionary © Cambridge University Press)
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