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backflow

noun

back·​flow ˈbak-ˌflō How to pronounce backflow (audio)
: a flowing back or returning especially toward a source

Examples of backflow in a Sentence

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.
Plumbing system is not installed to preclude backflow. Gege Reed, Louisville Courier Journal, 21 Nov. 2025 Urinary tract abnormalities such as blockages or reflux (backflow of urine toward the kidneys) and the use of urinary catheters also heighten infection risk. Daryl Austin, USA Today, 7 Nov. 2025 Businesses would have their water cut off at their dedicated sprinkler water meter, while homeowners would have the backflow device for their sprinkler system locked until the violation is fixed, Harder said. Harrison Mantas, Fort Worth Star-Telegram, 5 Nov. 2025 In addition, a clogged drain can develop into a clog deep inside the sewer system, which can lead to backflow (when dirty water from the sewer system pours back into your home). Daley Quinn, Southern Living, 16 Oct. 2025 See All Example Sentences for backflow

Word History

First Known Use

1878, in the meaning defined above

Time Traveler
The first known use of backflow was in 1878

Browse Nearby Words

Cite this Entry

“Backflow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backflow. Accessed 30 Nov. 2025.

Last Updated: - Updated example sentences
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