The spread of power away from the center to local branches or governments WordNet 3.0 & Open English WordNet

Decentralization or decentralisation is the process by which the activities of an organization, particularly those regarding planning and decision-making, are distributed or delegated away from a central, authoritative location or group and given to smaller factions within it. Wikipedia

Process of redistributing or dispersing functions, powers, people or things away from a central location or authority Wikidata

Basic organizational leadership concept and process of shifting and delegating power and authority from a higher level to subordinate levels within the administrative/managerial hierarchy in order to promote independence, responsibility, and quicker decision-making in applying or interpreting policies and procedures to the needs of these levels. OmegaWiki

The action of decentralizing, or the state of being decentralized. Wiktionary

The action of decentralizing. Wiktionary (translation)