境界

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境界

noun きょうかい

物と物との境。疆界。極限。
意識と無意識の境。識閾。marginalの訳。
土地において、2以上の者の所有権を画する境。古くは「ケイカイ」と読み（現在でも、法曹関係者ではこのように読む）、経界とも書かれた。境界確定判決
位相空間論ある位相空間のある部分集合を考えるとき、その部分集合の全ての境界点から成る集合。

In English

boundary dividing line or location between two areas
frontier part of a country that fronts or faces another country or an unsettled region
border the outer edge of something

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MLA

"境界." Wiktionary, via Micwyn, micwyn.com/word/ja/%E5%A2%83%E7%95%8C. Accessed 7 Nov. 2026.

APA

境界. (n.d.). In Wiktionary, via Micwyn. Retrieved November 7, 2026, from https://micwyn.com/word/ja/%E5%A2%83%E7%95%8C

Chicago

"境界." Wiktionary, via Micwyn. Accessed November 7, 2026. https://micwyn.com/word/ja/%E5%A2%83%E7%95%8C.

BibTeX

@misc{micwyn_2026,
  title = {境界},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/ja/%E5%A2%83%E7%95%8C},
  urldate = {2026-11-07}
}