Diffusion of fluids, either gaseous or liquid, as influenced by the temperature of the fluid. ... (05 Mar 2000) ... 
(thur″mo-dĭ-fu´zhәn) diffusion due to a temperature gradient.
Type: Term Pronunciation: ther′mō-di-fyū′zhŭn Definitions: 1. Diffusion of fluids, either gaseous or liquid, as influenced by the temperature of the fluid.
thermodiffusion 1. Diffusion of fluids, either gaseous or liquid, as influenced by the temperature of the fluid. 2. A process in which temperature differentiation within a fluid mixture causes one constituent to flow differently than the mixture as a whole.