[{"Bold_text": "noun", "List Items": ["Physical Chemistry.the separation of crystalloids from colloids in a solution by diffusion through a membrane.", "Biochemistry.the separation of large molecules, as proteins, from small molecules and ions in a solution by allowing the latter to pass through a semipermeable membrane.", "Medicine/Medical.(in kidney disease) the process by which uric acid and urea are removed from circulating blood by means of a dialyzer ."]}]