[ doun-streem ]
See synonyms for downstream on
  1. with or in the direction of the current of a stream.

  1. of or relating to the latter part of a process or system.

  2. Genetics. with or in the direction of transcription, translation, or synthesis of a DNA, RNA, or protein molecule.

Origin of downstream

First recorded in 1700–10; down1 + stream

Words Nearby downstream Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use downstream in a sentence

British Dictionary definitions for downstream


/ (ˈdaʊnˈstriːm) /

adverb, adjective
  1. in or towards the lower part of a stream; with the current

  2. (in the oil industry) of or for the refining, distribution, or marketing of oil or its derived products: Compare upstream (def. 2)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012