osmosis

1. (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal (synset 113549303)
   referred to in:

   • biological science, biology - the science that studies living organisms
   • chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
   is a type of: diffusion - (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration
   subtypes: reverse osmosis - (chemistry) a method of producing pure water; a solvent passes through a semipermeable membrane in a direction opposite to that for natural osmosis when it is subjected to a hydrostatic pressure greater than the osmotic pressure
   is a part of: dialysis - separation of substances in solution by means of their unequal diffusion through semipermeable membranes

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