Natural Phenomenon or Process
diffusion Audio
dif·fu·sion [ dih-fyoo-zhuhn ]
Definitions related to diffusion:
  • Tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space; a major mechanism of biological transport.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The movement of chemical species under the influence of a concentration difference and as a result of random thermal agitation. The species will move from the high concentration area to the low concentration area till the concentration is uniform in the whole phase.
    NCI
    U.S. National Cancer Institute, 2021
  • The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
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