Flowing out or forth.
Something that flows out or forth, especially:
a. A stream flowing out of a body of water.
b. An outflow from a sewer or sewage system.
c. A discharge of liquid waste, as from a factory or nuclear plant.
[Middle English, from Latin effluēns, effluent-, present participle of effluere, to flow out : ex-, ex- + fluere, to flow; see bhleu- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.