meaning of diffusion
1. The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
2. The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc. , through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.
3. the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of
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