"dispersion" in the noun sense
1. dispersion, scattering
spreading widely or driving off
2. distribution, dispersion
the spatial or geographic property of being scattered about over a range, area, or volume
"worldwide in distribution"
"the distribution of nerve fibers"
"in complementary distribution"
3. dispersion, dispersal, dissemination, diffusion
the act of dispersing or diffusing something
"the dispersion of the troops"
"the diffusion of knowledge"
Source: WordNet® (An amazing lexical database of English)
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