say it: di-SPUR-suhl
dispersal is a noun meaning "the act of dispersing or diffusing something". It carries one recorded sense.
the act of dispersing or diffusing something
“the dispersion of the troops”
“the diffusion of knowledge”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for dispersal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.