From Longman Dictionary of Contemporary Englishall-timeˈall-time adjective used when you compare things to say that one of them is the best, worst etc that there has ever beenan all-time high/low The price of wheat had reached an all-time low. They reached an all-time record score.
Examples from the Corpus
all-time• As a result, they've dragged down Freeserve's share price to an all-time closing low of 122p.• His all-time hero was John Wheatley, the health and housing minister.• The goal moved Lindros past Ilkka Sinisalo into ninth place on the Flyers' all-time list.• Edward's affair and subsequent marriage to divorced Mrs Simpson had left the family's popularity at an all-time low.• The exposure it received this year was an all-time record.all-time record• From 1980 to 1981 they rose a further 10 percent, to reach an all-time record.• That was 48 % up on the year before, and an all-time record.• The exposure it received this year was an all-time record.• It's an all-time record befitting the 8 times champion jockey who once won 221 races in a season.From Longman Business Dictionaryall-timeˈall-time adjective all-time low/high/peak/record the lowest or highest that something has ever beenThe news caused the dollar to fall to an all-time low against the euro.Orders rose 35% to an all-time high for May. 