勢力圏(せいりょくけん)

せいりょくけん
noun
sphere of influence
1. sphere of influence; sphere of power
An area or domain over which a country, organization, or person exerts significant influence or control. Used in political, military, and business contexts.
勢力圏(せいりょくけん)を広(ひろ)げる。
To expand one's sphere of influence.
その地域(ちいき)は大国(たいこく)の勢力圏(せいりょくけん)に入(はい)っていた。
That region was within the great power's sphere of influence.
冷戦(れいせん)時代(じだい)、世界(せかい)は二(ふた)つの大(おお)きな勢力圏(せいりょくけん)に分(わ)かれていた。
During the Cold War era, the world was divided into two large spheres of influence.

A compound of 勢力(せいりょく) (power, influence) and 圏(けん) (sphere, zone). A key term in political science, history, and international relations.

COMMON COLLOCATIONS:

  • 勢力圏(せいりょくけん)を広(ひろ)げる: to expand one's sphere of influence
  • 勢力圏(せいりょくけん)に入(はい)る: to fall within a sphere of influence
  • 勢力圏(せいりょくけん)争(あらそ)い: struggle over spheres of influence

SIMILAR WORDS:

  • 縄張(なわば)り: territory — more informal; used for animals or yakuza turf
  • 影響力(えいきょうりょく): influence — the power itself, not the geographic area
  • 支配圏(しはいけん): sphere of control — implies more direct domination
general
Added 2026.4.4 7:10
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