: a flowing back or returning especially toward a source
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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 That includes where decisions are made, who depends on whose output, where information crosses boundaries and where the backflow points are.—Barbara Wittmann, Forbes.com, 22 May 2026 Crostplay2 said the project went through around ten motor driver boards during testing due to power backflow while uploading new firmware to the ESP32.—Kaif Shaikh, Interesting Engineering, 22 May 2026 Two of her apartment's copper backflow preventer systems were stripped, less than three weeks apart.—Gabriela Vidal, CBS News, 19 May 2026 See All Example Sentences for backflow