deconcentration/diːˌkɒnsənˈtɹeɪʃən/EtymologyFrom de- + concentration.deconcentration means the act of deconcentrating; decentralization. Lexicurio rates it Rare gem — a strength score of 83 out of 100.deconcentration is pronounced /diːˌkɒnsənˈtɹeɪʃən/.nounThe act of deconcentrating; decentralization.