dif|fu|sion «dih FYOO zhuhn», noun.
1. the act or fact of diffusing; a spreading or scattering widely: »
The invention of printing greatly increased the diffusion of knowledge. The spreading of patterns and traits from one group or area to another is known as cultural diffusion.
2. a being widely spread or scattered; diffused condition.
3. a) a mixing together of the atoms or molecules of substances by spreading into one another: »
the diffusion of gases, liquids, or solids. An example of a new relation is found in the combination of diffusion and heat flow (R. O. Davies).
b) the scattering of light resulting from its being reflected from a rough surface. See scatter. (Cf. ↑scatter)4. the use of too many words; wordiness.
Useful english dictionary. 2012.