Skip to definition.
Get the FREE one-click dictionary software for Windows.


Adverb: upstream  úpstreem
  1. Toward the source or against the current
    - upriver
Adjective: upstream  úpstreem
  1. In the direction against a stream's current
     
  2. In the direction towards the source of a signal; at a higher level
    "The messages are transmitted to dendrites by upstream neurons via synapses"

Antonym: downstream

Encyclopedia: Upstream