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English definition of “optimum”

optimum

adjective [before noun]     /ˈɒp.tɪ.məm/ US  /ˈɑːp-/ (also optimal)
best ; most likely to bring success or advantage : A mixture of selected funds is an optimum choice for future security and return on investment .Extremely good
(Definition of optimum adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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