Meaning of “all-time” in the English Dictionary

british dictionary

"all-time" in British English

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all-timeadjective [ before noun ]

uk /ˌɔːlˈtaɪm/ us /ˌɑːlˈtaɪm/

An all-time high, low, best, etc. is the highest, lowest, best, etc. level that has ever been:

After three years of drought, the water in the lake had reached an all-time low.

(Definition of “all-time” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"all-time" in Business English

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all-timeadjective [ before noun ]

uk /ˌɔːlˈtaɪm/ us

the highest, lowest, best, etc. that something has ever been:

an all-time high/low/record In October, the stock hit an all-time high of $90.

(Definition of “all-time” from the Cambridge Business English Dictionary © Cambridge University Press)