AskDefine | Define upstream

Dictionary Definition

upstream adj : in the direction against a stream's current [ant: downstream] adv
1 toward the source or against the current [syn: upriver] [ant: downriver, downriver]
2 against the current; "he swam upstream"

User Contributed Dictionary



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




  1. against the current



Extensive Definition

In geography, upstream means literally towards the source of a stream or river, or against the normal direction of water flow. By analogy with this, see also:
There are also companies named upstream. See list below:
Other uses:
upstream in German: Upstream
upstream in Portuguese: Montante
upstream in Urdu: زبر بہاؤ
Privacy Policy, About Us, Terms and Conditions, Contact Us
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2
Material from Wikipedia, Wiktionary, Dict
Valid HTML 4.01 Strict, Valid CSS Level 2.1