plural of perimeter

(mathematics) The sum of the distance of all the lengths of the sides of an object. / (mathematics) The length of such a boundary. / The outer limits of an area. See synonyms at circumference.

A fence that circles the perimeter of an area to prevent access

plural of perimeter fence

(law enforcement) A patrol conducted by law enforcement to monitor or secure an area. / A general observation of an area conducted to ensure safety and security.

plural of perimeter check