Definition of upstream adverb from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌʌpˈstriːm//
; NAmE NAmE//ˌʌpˈstriːm//
(less frequent upriver) Rivers and lakes
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upstream (of/from something) along a river, in the opposite direction to the way in which the water flows The nearest town is about ten miles upstream. upstream of/from the bridge opposite downstream See related entries: Rivers and lakes
See the Oxford Advanced American Dictionary entry: upstream