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

Related Words

Compare: 縄張(なわば)り (territory)

Compare: 影響力(えいきょうりょく) (influence)

general

Added 2026.4.4 7:10 · Revised 2026.9.2 13:02

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