outfall

noun

out·​fall ˈau̇t-ˌfȯl How to pronounce outfall (audio)
: the outlet of a body of water (such as a river or lake)
especially : the mouth of a drain or sewer

Examples of outfall in a Sentence

Recent Examples on the Web
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From there, the Atlantic Ocean becomes the final receiver, as coastal outfalls release treated or partially treated effluent directly into marine waters. Melissa Cristina Márquez, Forbes.com, 2 July 2026 Work started on the project in March 2025, focusing on the outfall system running from Phil’s Beach, on Main Street, to Route 176. Greg Harutunian, Chicago Tribune, 20 June 2026 For these reasons, members of the public should never enter a pipe, drain, catch basin, manhole, or outfall. Brie Stimson, FOXNews.com, 31 May 2026 The state’s wastewater permit requires that sampling be conducted at the outfall pipe. Arcelia Martin, San Antonio Express-News, 27 Apr. 2026 See All Example Sentences for outfall

Word History

First Known Use

1629, in the meaning defined above

Time Traveler
The first known use of outfall was in 1629

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Cite this Entry

“Outfall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/outfall. Accessed 4 Jul. 2026.

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