efflux

[ef-luhks]
noun
1.
outward flow, as of water.
2.
something that flows out; effluence.
3.
a passing or lapse of time.
4.
a passing away; expiration; ending.
Also, effluxion [ih-fluhk-shuhn] , (for defs 3, 4).


Origin:
1635–45; < Medieval Latin effluxus, equivalent to Latin ef- ef- + fluc-, variant stem of fluere to flow + -sus, for -tus suffix of v. action

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World English Dictionary
effluence or efflux (ˈɛflʊəns, ˈɛflʌks)
 
n
1.  the act or process of flowing out
2.  something that flows out
 
efflux or efflux
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

efflux
1640s, from L. effluxus, from effluere (see effluence).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
One trick used by some bacteria is to eject antibiotics through so-called efflux pumps embedded in their cellular membranes.
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