In the process of diffusion of a single solute, a concentration of molecules on one side of a membrane (top) will move through a membrane (center) until there is equilibrium on both sides (bottom).
dif·fu·sion
(dĭ-fyo͞o′zhən)n.
1. The process of diffusing or the condition of being diffused: the diffusion of new technology around the world.
2. Physics
a. The scattering of incident light by reflection from a rough surface.
b. The transmission of light through a translucent material.
c. The spontaneous intermingling of the particles of two or more substances as a result of random thermal motion.
3. The spread of linguistic or cultural practices or innovations within a community or from one community to another.
dif·fu′sion·al adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
diffusional
(dɪˈfjuːʒənəl)adj
of, relating to, or involving diffusion
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014