late 14c., dispersioun, "the Jewish diaspora," from Old French dispersion (13c.), from Latin dispersionem (nominative dispersio) "a scattering," noun of action from past-participle stem of dispergere "to scatter," from dis- "apart, in every direction" (see dis-) + spargere "to scatter" (see sparse). Meaning "act of scattering, state of being dispersed" is from early 15c.
