osmosis
os·mo·sis
noun \äz-ˈmō-səs, äs-\plural ; os·mo·ses \-ˌsēz\ (audio pronunciation)
Definition of OSMOSIS
: movement of a solvent through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane
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