意味(日本語)

周囲、周辺、視野計 ◇peri(＝round) ＝周囲の長さ

語源

• metro-. -meter : Gk.metron = a measure（計測）

意味(英語)

• (noun) Mathematics A closed curve bounding a plane area.
• (noun) Mathematics The length of such a boundary.
• (noun) The outer limits of an area. See Synonyms at circumference.
• (noun) A fortified strip or boundary usually protecting a military position.

例文

• And he wanted any analyses that have been done to explain the implications of using the term "perimeter security," the rejection by some people of that term, and the approaches that might be adopted by the government to sell it to the public.