Definition of perimeter noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//pəˈrɪmɪtə(r)//
    ; NAmE NAmE//pəˈrɪmɪtər//
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  1. 1the outside edge of an area of land Guards patrol the perimeter of the estate. a perimeter fence/track/wall
  2. 2 (mathematics) the total length of the outside edge of an area or a shape Find the area and perimeter of the following shapes. compare circumference
  3. Word Originlate Middle English: via Latin from Greek perimetros, based on peri- ‘around’ + metron ‘measure’.Extra examples Many of the offices are located on the perimeter of the site. The gunman did not breach the security perimeter around the White House. The river marks the eastern perimeter of our land. There’s a small shop on the perimeter of the camp. They demonstrated just outside the perimeter of the embassy. We walked around the perimeter of the prison. There is a 15-foot perimeter fence.
See the Oxford Advanced American Dictionary entry: perimeter