vividiffusion

Archaic term for a method by which circulating blood may be submitted to dialysis outside the body and returned to the circulation without exposure to the air or to any noxious influences; the principle used in the performance of renal dialysis with the artificial kidney. [vivi- + diffusion]

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vivi·dif·fu·sion .viv-ə-di-'fyü-zhən n dialysis performed by passing the blood through celloidin tubes immersed in an isotonic solution into which diffusible substances from the blood diffuse before the blood returns to the circulatory system