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reflux (plural refluxes)

  1. the backwards flow of any fluid
    • 1719- Daniel Defoe, Robinson Crusoe
      ...after a little way out to sea, there was a current and wind, always one way in the morning, the other in the afternoon. This I understood to be no more than the sets of the tide, as going out or coming in; but I afterwards understood it was occasioned by the great draft and reflux of the mighty river Orinoco...
  2. (chemistry) a technique, using a reflux condenser, allowing one to boil the contents of a vessel over an extended period
  3. (pathology) The leaking of stomach acid up into the oesophagus

Derived terms[edit]



reflux (third-person singular simple present refluxes, present participle refluxing, simple past and past participle refluxed)

  1. To boil a liquid in a vessel having a reflux condenser