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English definition of “one”

one

number, determiner (FUTURE TIME)    /wʌn/
B2 used to refer to a time in the future that is not yet decided: Why don't we meet for lunch one day next week? I'd like to go skiing one Christmas.Describing when something happened or will happenIn the future and soon
(Definition of one numberdeterminer (FUTURE TIME) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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