Definition of efflux in English:

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Pronunciation: /eˈfləks/


1The flowing out of a particular substance or particle.
Example sentences
  • For the first category of compounds, it is the cell wall, together with the outer membrane and associated proteins, which presents a potential barrier to influx and efflux of chemical compounds.
  • The first step in this process is calcium ion efflux from the cells.
  • The scary aspect of this is that calcium ion efflux occurs at intensities and field strengths that are extremely low.
1.1Material flowing out.
Example sentences
  • Together, these findings are consistent with the current being carried by a burst of Cl - efflux through Cl - permeable channels that activate almost simultaneously.
  • Diverse mechanisms may be responsible for the development of resistance for Cr in microbes, including chromate efflux 85.
  • So, by such a transport inhibition of ketone body efflux from the liver, the brain is deprived of those energetic compounds leading to lower BDH activity.
1.2 another term for effluxion (sense 1).


Mid 16th century: from medieval Latin effluxus, from effluere 'flow out'.

For editors and proofreaders

Syllabification: ef·flux

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