In sum

in short; in brief.- Rogers.

in sum

As a final brief, concluding point. In sum, if we do not address this issue now, it will become insurmountable in a few years' time.See also: sum

in ˈsum

(formal) used to introduce a short statement of the main points of a discussion, speech, etc: In sum, there are significant gaps in technological development across countries.See also: sum

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