Translation guide
The outer edge or boundary of an area, or the length of that boundary. In Japanese, different words are used depending on whether you mean the physical boundary line, the surrounding area, or the mathematical length.
The physical line or border that encloses a space, such as a fence, wall, or marked boundary.
General term for the perimeter or circumference of an area. Commonly used for the outer edge of a property, park, or object.
その公園の周囲には高いフェンスがある。
There is a tall fence around the perimeter of the park.
Outer perimeter or circumference, often used for roads, tracks, or the outer edge of a facility.
工場の外周を警備員が巡回している。
Security guards patrol the perimeter of the factory.
Boundary line, often used in legal or property contexts to mark the exact dividing line.
敷地の境界線を確認してください。
Please check the perimeter line of the property.
The total distance around the edge of a shape or area, especially in mathematics or measurement.
Mathematical term for perimeter length. Used in geometry and technical contexts.
この長方形の周長を計算しなさい。
Calculate the perimeter of this rectangle.
More descriptive phrase meaning 'length of the outer perimeter', used in everyday measurement.
この土地の外周の長さは約200メートルです。
The perimeter of this land is about 200 meters.
The zone or strip of land just inside the fence or edge, often for security or patrol.
Refers to the area around the perimeter of a site, often used in security contexts.
不審者が敷地の周辺をうろついていた。
A suspicious person was lurking around the perimeter of the property.
Outer perimeter area, used in facility management or military contexts.
基地の外周部にセンサーが設置されている。
Sensors are installed along the perimeter of the base.
周囲 is the most general term for the outer edge of any area. 外周 emphasizes the outer circuit, often for roads or patrols. 境界線 is specifically a legal or property boundary line.
The loanword ペリメーター exists but is rare and technical. Stick to native Japanese terms for natural communication.