the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
the diffusion of fluids through membranes or porous partitions. Compare endosmosis, exosmosis.
a subtle or gradual absorption or mingling
and something having a uniform, massive, redoubtable, or inflexible quality or character.