the middle of a stream.
the middle period of a process, course, or the like.

Origin of midstream

First recorded in 1275–1325, midstream is from the Middle English word myddstreme. See mid-, stream
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for midstream

Contemporary Examples of midstream

Historical Examples of midstream

  • They divided like running water when it reaches a big rock in midstream.

    The Pirate of Panama

    William MacLeod Raine

  • Did she care enough to break through all barriers, fling herself into midstream?


    John Galsworthy

  • Already were the voyagers in midstream, almost before they knew it.

  • He was dragged under as the force of the torrent flung him into midstream.

    The Fighting Edge

    William MacLeod Raine

  • The jam began between two ledges in midstream, where no one could get near it.

    The Backwoodsmen

    Charles G. D. Roberts

British Dictionary definitions for midstream



the middle of a stream or river
the middle of a process or actionthey tried to change the rules in midstream

adverb, adjective

in or towards the middle of a stream or rivermoored midstream
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

Word Origin and History for midstream

also mid-stream, Old English midstream; see mid + stream (n.).

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with midstream


see change horses midstream.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.