Definition of electroosmosis

1) The process
by which charged particles will tend to migrate toward a less charged
area.  Generally, when we think of this, we think of an electrolysis
process where cations move in one direction, anions move in the other,
and the net movement over the sample is zero.  However, commonly
there are areas of higher charge density, and the electroosmotic effect
can greatly affect the behavior of the liquid.