[ ef-loo-uhnt ]
See synonyms for effluent on Thesaurus.com
  1. flowing out or forth.

  1. something that flows out or forth; outflow; effluence.

  2. a stream flowing out of a lake, reservoir, etc.

  1. sewage that has been treated in a septic tank or sewage treatment plant.

  2. sewage or other liquid waste that is discharged into a body of water, etc.

Origin of effluent

1720–30; <Latin effluent- (stem of effluēns flowing out, present participle of effluere), equivalent to ef-ef- + flu- flow + -ent--ent

Other words from effluent

  • su·per·ef·flu·ent, adjective

Words Nearby effluent

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use effluent in a sentence

British Dictionary definitions for effluent


/ (ˈɛflʊənt) /

  1. liquid discharged as waste, as from an industrial plant or sewage works

  2. radioactive waste released from a nuclear power station

  1. a stream that flows out of another body of water

  2. something that flows out or forth

  1. flowing out or forth

Origin of effluent

C18: from Latin effluere to run forth, from fluere to flow

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

Scientific definitions for effluent


[ ĕflōō-ənt ]

  1. Flowing out or forth.

  1. A stream flowing out of a body of water.

  2. An outflow or discharge of liquid waste, as from a sewage system, factory, or nuclear plant.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.