Sector
Sector (exploration) in the Stellaris encyclopedia: Sectors are administrative regions within an empire, grouping multiple Colonies under a centralized governing structure. Sectors help manage planetary development, resource distribution, and automation of local economies.
Sector in the game's words
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Sectors are administrative regions within an empire, grouping multiple 
Colonies under a centralized governing structure. Sectors help manage planetary development, resource distribution, and automation of local economies.
Each sector may be overseen by a Governor, whose skills and Leader Traits can influence its efficiency. Effective sector management ensures economic stability and reduces the administrative burden of a growing empire.
Entries that mention Sector
More in Exploration
Source: common/game_concepts (concept_sector, also concept_sectors) and localisation/english, Stellaris Cygnus v4.5.2 (9776).