中心|ちゅうしんchuushin[0]heiban (flat)

1. no-adjectivecenter; centre; middle; heart; core; focus; pivot; emphasis; balance
   その町まちの中心ちゅうしんにすてきな公園こうえんがある。↗

   There is a nice park in the center of the town.
2. suffix-centered; -centred; -focused; -oriented; centered on; focused on

• Synonym真ん中まんなかCasualColloquial word for the exact middle of a space, as in 「道の真ん中」. 「中心」 also covers the core of a topic or activity, which 「真ん中」 does not.
• Synonym中央ちゅうおうWrittenLeans written: a centered position, or the capital and seat of government as in 「中央官庁」. 「中心」 is the more common choice for abstract cores.
• Synonym中心部ちゅうしんぶNeutralThe central area or district, as in 「都市の中心部」. It denotes a zone with extent, whereas 「中心」 can be a single point.
• SynonymコアNeutralLoanword for the core part, as in 「コアメンバー」, also used for hardcore or devoted fans. Common in business and IT contexts.
• SynonymセンターNeutralLoanword for a facility that concentrates a function, or a central position, as in 「ショッピングセンター」. Often appears in the names of institutions.
• SynonymミドルNeutralLoanword for the middle range or middle age, as in 「ミドルクラス」. It never carries the sense of a core.
• Synonym核かくWrittenThe core of something, but also a fruit pit, cell nucleus, or nuclear weapons. Common in set phrases like 「核となる」 and 「核家族」.
• Synonym核心かくしんWrittenThe most important, essential part of something, as in 「問題の核心」 or 「核心に迫る」. Mostly used for abstract issues.
• Synonym焦点しょうてんNeutralLiterally the point where light rays converge; figuratively where attention gathers, as in 「議論の焦点」. In that figurative sense it is about attention, not location.
• Synonym中部ちゅうぶNeutralThe middle part of a region; in Japan it specifically names the Chūbu region. Mostly seen in geographic names.
• Synonym真っ只中まっただなかNeutralStresses being right in the middle, often at the most intense point of a state or season, as in 「夏の真っ只中」.
• Synonym中央部ちゅうおうぶWrittenWritten word for the central part, mostly in descriptions of geography or objects. In daily speech people say 「中心部」 or 「真ん中」.
• Synonym中心地ちゅうしんちNeutralA concrete place where activity is concentrated, as in 「流行の中心地」. 「中心」 can also refer to people or topics, not just places.
• Synonym中心点ちゅうしんてんWrittenWritten term for the single point at the center of a figure or thing. It stresses one point more than 「中心」 and appears in explanatory prose.
• Synonym只中ただなかWrittenWritten word for the very middle, often being in the midst of a state, as in 「混乱の只中」. Mostly used for time and states.
• Related中間ちゅうかんNeutralThe space between two things or an intermediate stage, as in 「中間テスト」. It need not be the core or the exact middle.
• Related中核ちゅうかくWrittenThe part that plays the central role in an organization or thing, as in 「中核都市」 or 「中核を担う」. Leans written and formal.
• Related芯しんNeutralThe wick of a candle, pencil lead, the core of an apple and the like; figuratively one's inner core, as in 「芯が強い」. Tied to concrete objects or character.
• Related最中さいちゅうNeutralThe very moment something is in progress, as in 「食事の最中」. Used only for time, while 「中心」 is mostly about position and the core.
• Related中なかNeutralMostly means the inside or interior, as in 「部屋の中」, and can mark the middle between two ends, but not a focal point or the core of something.
• Related中頃なかごろNeutralRoughly the middle of a period or stretch, as in 「来月の中頃」. Mostly about time, and only approximate.
• Antonym周辺しゅうへんNeutralAntonym: the area around the center, as in 「駅の周辺」.
• Antonym端はしNeutralAntonym: the edge or end of something, as in 「机の端」.
• Antonym外縁がいえんWrittenAntonym: a written word for the outer edge or periphery, opposite of 「中心」. Mostly in explanatory or academic prose.

Use 「中心」 for the center of a position or the core of a thing or activity. Say 「真ん中」 for the exact middle in colloquial speech, 「核心」 for the essence of a problem, 「焦点」 for where attention concentrates, and 「最中」 for being right in the middle of something in time. For areas say 「中心部」, for core roles 「中核」 or 「核」, and for the loanword options 「コア」 or 「センター」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 図形ずけいにおいて両端りょうたん等とうから等距離とうきょりとなる点てん。
2. 一いち次元じげん空間くうかんにおいては、ある2点てんから等距離とうきょりである点てん。
3. 円周えんしゅう・球面きゅうめんの全すべての点てんから等ひとしい距離きょりにある点てん。
4. 点対称てんたいしょうである図形ずけいにおいて、180度ど回転かいてんの軸じくとなる点てん。
5. それを始点してんとして、外周がいしゅうや表面ひょうめん等とうへ伸のばしたすべてのベクトルの総和そうわが0となる点てん。重心じゅうしん。
6. 任意にんいの三角形さんかっけいから一意的いちいてきに求もとめることができる点てんの総称そうしょう。2026年ねん2月がつ16日か現在げんざい71392種しゅを数かぞえる。
7. 2個こ以上いじょうのものの相対的そうたいてき位置いちであって、語義ごぎ1に比較的ひかくてき近ちかい場所ばしょ。真ん中まんなか
8. 事態じたいが集中しゅうちゅうして発生はっせいする場所ばしょ。
9. ある組織そしきや活動かつどうにおいて、他たを率ひきいるなど最重要さいじゅうようの地位ちいにあること。そのような人ひとや物もの。
10. 冪級数べききゅうすうf(x)=∑ₙ₌₀ ᪲a_n(x-c)ⁿにおける定数ていすうcを指さす称しょう。