epoch-making(redirected from epoch-makingly)
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So significant and momentous as to characterize the beginning of a period: the president's epoch-making trip to China; epoch-making new technologies.
of great importance; momentous
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|Adj.||1.||epoch-making - highly significant or important especially bringing about or marking the beginning of a new development or era; "epochal decisions made by Roosevelt and Churchill"; "an epoch-making discovery"|