[n] the act of dispersing or diffusing something; "the dispersion of the troops"; "the diffusion of knowledge"
[n] the property of being diffused or dispersed
[n] the spread of social institutions (and myths and skills) from one society to another
[n] (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation
action, activity, crop-dusting, dispersion, distribution, impregnation, natural action, natural process, osmosis, permeation, pervasion, saturation, spraying, spread, spread, spreading, spreading, suffusion, transport
\Dif*fu"sion\, n. [L. diffusio: cf. F. diffusion.]
1. The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion. A diffusion of knowledge which has undermined superstition. --Burke.
2. (Physiol.) 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. Syn: Extension; spread; propagation; circulation; expansion; dispersion.