Area - Ryoiki

Japanese: 領域 - りょういき

〘noun〙① The area that is considered to be one's domain. Also, the range of the relationship between the two. *Tojuro's Love (1919) by Kikuchi Kan, volume 7: "The domain of love that I have yet to step into." ② (In academics, research, etc.) The range of one's expertise. Territory. *Poverty Story (1916) by Kawakami Hajime, volume 13: "Once my economics escaped the realm of ethics." ③ The range over which a nation's sovereignty extends under international law. It is divided into three parts: territory, airspace, and territorial waters. *Tonto-roku (1916) by Natsume Soseki, "Militarism: The land, the territory, the Luodian people, the Teutonic race." ④ In mathematics, a set. ⑤ In mathematics, an open set such that any two points of the set can be connected by a curve within the set. ⑥ In computers, the range covered by a certain operation in a program. Also, the range over which operations can be performed on a storage device such as a hard disk.

Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information

Japanese:

〘名〙① その領分とされる区域。また、そのものの関係のおよぶ範囲。※藤十郎の恋（1919）〈菊池寛〉七「未だ踏んで見た事のない恋の領域の事を」② （学問・研究などで）その専門とする範囲。領分。※貧乏物語（1916）〈河上肇〉一三「一たび倫理学の領域外に脱出せし我経済学は」③ 国際法上、国家の主権の及ぶ範囲。領土・領空・領海の三部に分かれる。※点頭録（1916）〈夏目漱石〉軍国主義「国土や領域や羅甸民族やチュートン人種や」④ 数学で、集合のこと。⑤ 数学で開集合のうち、そのどの二点もその集合内の曲線で結べるようなもののこと。⑥ コンピュータで、プログラム上のある操作が及ぶ範囲。また、ハードディスクなどの記憶装置上で操作が可能な範囲。

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