[ doun-streem ]
/ ˈdaʊnˈstrim /


with or in the direction of the current of a stream.


of or relating to the latter part of a process or system.
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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for downstream

British Dictionary definitions for downstream


/ (ˈdaʊnˈstriːm) /

adverb, adjective

in or towards the lower part of a stream; with the current
(in the oil industry) of or for the refining, distribution, or marketing of oil or its derived productsCompare 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