Reflux

//ˈɹiː.flʌks// noun, verb

noun, verb ·Moderate ·High school level

Definitions

Noun
  1. 1
    The backwards flow of any fluid. countable, uncountable

    "[…] 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. 2
    the outward flow of the tide wordnet
  3. 3
    A technique, using a reflux condenser, allowing one to boil the contents of a vessel over an extended period. countable, uncountable
  4. 4
    an abnormal backward flow of body fluids wordnet
  5. 5
    The leaking of stomach acid up into the oesophagus. countable, uncountable
Verb
  1. 1
    To flow back or return.

    "the refluxing tide"

  2. 2
    To boil a liquid in a vessel having a reflux condenser.

Synonyms

All synonyms
ebbaction and reactionadvanceangular motionanswerascending

Example

More examples

"My girlfriend suffers from acid reflux."

Related phrases

acid refluxgastric refluxgastric reflux diseasegastroesophageal refluxhepatojugular refluxreflux condenseryo-yo refluxreflux condenser

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.