noun
1. the act of dispersing or diffusing something
e.g. the dispersion of the troops
the diffusion of knowledge
Synonym: dispersiondispersaldissemination
2. the property of being diffused or dispersed
Synonym: dissemination
3. the spread of social institutions (and myths and skills) from one society to another
4. (physics) the process in which there is movement of a substance from an area of high concentration of that substance to an area of lower concentration