[ in-floo-uh nt ]
/ ˈɪn flu ənt /


flowing in.


a tributary.
Ecology. a plant or animal that has an important effect on the biotic balance in a community.

Origin of influent

1400–50; late Middle English < Latin influent- (stem of influēns) inflowing. See in-2, fluent Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for influent

  • We had thus examined each of its three mouths, and settled all doubts as to the Rusizi being an effluent or influent.

    How I Found Livingstone|Henry M. Stanley

British Dictionary definitions for influent

/ (ˈɪnflʊənt) /

adjective Also: inflowing

flowing in


something flowing in, esp a tributary
ecology an organism that has a major effect on the nature of its community
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