dispersion

(noun) spreading widely or driving off. Synonyms: scattering.

(noun) the spatial or geographic property of being scattered about over a range, area, or volume. Synonyms: distribution. Examples: "Worldwide in distribution." "The distribution of nerve fibers." "In complementary distribution."

(noun) the act of dispersing or diffusing something. Synonyms: dispersal, dissemination, diffusion. Examples: "The dispersion of the troops." "The diffusion of knowledge."