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backflow

back·flow [ ˈbak-ˌflō]

backflow

noun

[ˈbak-ˌflō]

Definition of backflow

: a flowing back or returning especially toward a source

Recent Examples on the Web

//Metacarpal When the head is lowered, valves in the veins close to prevent backflow of blood.
— National Geographic, "Unique anatomy sets giraffe apart in the animal kingdom," 20 Sep. 2019
//Charcoal and pieces of rock from the ensuing tsunami’s backflow were discovered, although sulfur was notably absent, according to researchers.
— Fox News, "Day the dinosaurs died: Asteroid impact site reveals devastation from power of 10 billion A-bombs," 10 Sep. 2019
//County auditors said Moore in a year’s time had made more than $18,000 in questionable purchases, including 11 faucets, 11 backflow-preventer repair kits and 108 feet of red brass pipe that could not be accounted for.
— Larry Barszewski, sun-sentinel.com, "Port Everglades fraud scandal racks up two guilty pleas," 7 Aug. 2019
//Calcium deposits in heart valves lead to scarring that can restrict outflow and allow backflow.
— WSJ, "Cardiovascular Health Frontier Is Calcium," 8 Oct. 2018
//Keep in mind that some kits don’t include pressure regulators, timers, backflow preventers, and line filters.
— The Editors, Good Housekeeping, "How to Install a Drip Irrigation System in Your Garden," 17 July 2018
//The city plans to build a new pumping station to prevent backflow from storm drains, which sends water into the streets.
— Talia Richman, baltimoresun.com, "Annapolis Boat Show will 'rise above' after flooding during last year's event," 7 July 2018
//Keep in mind that some kits don’t pressure regulators, timers, backflow preventers, and line filters.
— The Editors Of Organic Life, Good Housekeeping, "How To Use Soaker Hoses To Install A Drip Irrigation System In Your Garden," 7 Mar. 2017
//Its closed system uses a thin rubber backflow protector as a membrane to shield the tubing and pumping mechanism from possible milk-splashing, which could threaten the milk’s sterility.
— Adrienne So, WIRED, "Which Breast Pump Is Right For Me?," 8 Apr. 2018

First Known Use of backflow

1878, in the meaning defined above

Dictionary Entries near backflow