perimeter
//pəˈrɪmɪtər//
Noun
perimeterSingular
perimetersPlural
1
The continuous line forming the boundary of a closed geometric figure.
Calculate the perimeter of this rectangle.
2
The total length of such a boundary.
The perimeter of this rectangle is 24 centimeters.
3
The outer edge or boundary of an area or region.
Security guards patrol the perimeter of the building every hour.