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 The facility lacked a backflow prevention device in the mop sink. — Veronica Fernandez-Alvarado february 13, Sacbee.com, 13 Feb. 2026 At mop sink, backflow preventer missing on non chemical dispenser side of splitter with red hose attached. — Staff Reports, Florida Times-Union, 24 Mar. 2026 The cause of the chlorine gas exposure was likely due to the backflow process, which is used to clear out pool filters throughout the day, the news release states. — Greta Cross, USA Today, 3 June 2026 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

Rhymes for backflow

See All Rhymes for backflow

Browse Nearby Words

backflip
backflow
back focus
See all Nearby Words

Cite this Entry

“Backflow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backflow. Accessed 10 Jul. 2026.

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