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backflow

[bak-floh] /ˈbækˌfloʊ/
noun
1.
a flow of a liquid opposite to the usual or desired direction.
Origin
1880-1885
1880-85; back2 + flow
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for backflow
  • backflow is the undesirable reversal of the flow of water.
  • If you have your backflow device inspected or installed please keep a copy of this for your records.
  • The easiest way to keep you and your family safe from the potential hazards of backflow is to not create cross connections.

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