Definition of efflux in English:


Syllabification: ef·flux
Pronunciation: /ˈefləks


  • 1The flowing out of a particular substance or particle.
    More 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.
    More 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'.

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a small amount; a little