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up·stream

upstream

pronunciation:: uhp strim
parts of speech:: adverb, adjective

part of speech:	adverb
definition:	toward or near the origin of a stream or river; against the current. It's hard to swim upstream.

part of speech:	adjective
definition 1:	directed or positioned nearer to the origin of a river or stream. upstream pollutionan upstream dam
definition 2:	at or nearer the beginning of a serial process, such as manufacturing or oil production. upstream costs

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