(せいりょくはんい)

せいりょくはんい
noun
sphere of influence; territory
formalacademicbusinesspolitics
1. sphere of influence; territory; domain of power
The geographical or conceptual area over which a nation, organization, or individual exercises dominant influence or control.
勢力範囲(せいりょくはんい)(ひろ)げる
To expand one's sphere of influence.
あの企業(きぎょう)関東(かんとう)勢力範囲(せいりょくはんい)としている
That company has the Kanto region as its territory.
The era when great powers fought over spheres of influence produced many colonies.

A compound of 勢力(せいりょく) (power, influence) + 範囲(はんい) (range, scope). Originally a geopolitical term used in history and international relations, now also applied to business territories and organizational reach.

Common collocations

Similar words

  • 縄張(なわば): territory — more colloquial; used for animals, gangs, or informal territorial claims
  • 影響圏(えいきょうけん): sphere of influence — a more formal synonym, used in political science
  • 支配圏(しはいけん): zone of control — implies stronger, more direct control