Definition of backflow in English:

backflow

Line breaks: back|flow
Pronunciation: /ˈbakfləʊ/

Entry from British & World English dictionary

noun

[mass noun]
  • The movement of liquid or air back in the direction it was flowing from: when filling the tank, use an anti-siphon device to prevent backflow the valves prevent backflow of blood into the veins

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Word of the day milord
Pronunciation: mɪˈlɔːd
noun
used to address an English nobleman