effluent

1 of 2

adjective

ef·​flu·​ent ˈe-ˌflü-ənt How to pronounce effluent (audio)
e-ˈflü-,
ə-
: flowing out : emanating, outgoing
an effluent river

effluent

2 of 2

noun

: something that flows out: such as
a
: an outflowing branch of a main stream or lake
b
: waste material (such as smoke, liquid industrial refuse, or sewage) discharged into the environment especially when serving as a pollutant

Did you know?

Effluent comes from the Latin verb effluere, "to flow out". In an older meaning, an effluent was a stream flowing out of a river or lake. But nowadays effluent almost always means wastes that pour into our water and air. Liquid factory waste, smoke, and raw sewage can all be called effluents. An effluent filter keeps treated waste flowing out of a septic tank from clogging up its drainage pipes.

Examples of effluent in a Sentence

Noun The factory has been accused of discharging effluent into the river.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
Teague, who has more than three decades of water quality and coastal planning experience, told CNBC the application was full of holes, missing basic details about water discharge volumes, the temperature of the effluent and outfall locations. Lora Kolodny, NBC News, 12 Aug. 2024 If wind speeds exceed 10 mph, the fountain is shut off by sensors to ensure the effluent water used in the lake and fountain aren't blown out of the park, city officials said. Shelby Slade, The Arizona Republic, 9 Aug. 2024
Noun
In some areas, industries may suffer, too, for lack of water to cool machinery, generate hydropower, and flush effluents downstream. Scott Moore, Foreign Affairs, 29 May 2016 And each time, those on the far right contributed more garbage to the information effluent. F.d. Flam, The Mercury News, 17 Oct. 2024 See all Example Sentences for effluent 

Word History

Etymology

Adjective

Latin effluent-, effluens, present participle of effluere to flow out, from ex- + fluere to flow — more at fluid

First Known Use

Adjective

1726, in the meaning defined above

Noun

1859, in the meaning defined above

Time Traveler
The first known use of effluent was in 1726

Dictionary Entries Near effluent

effluence

effluent

effluve

Cite this Entry

“Effluent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/effluent. Accessed 21 Dec. 2024.

Kids Definition

effluent

noun
ef·​flu·​ent
ˈef-ˌlü-ənt;
e-ˈflü-,
ə-
: liquid (as sewage or industrial by-products) discharged as waste
effluent adjective
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