Definition of upstream

Definition of upstream
  1. upstream Adjective in a direction against the flow of a current or stream; upriver
  2. upstream Adjective involving exploration and pre-production rather than refining and selling
  3. upstream Adjective in the direction from the client to the server
  4. upstream Adjective towards the leading end (5'end) of a DNA molecule
  5. upstream Adverb against the current
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