perimeter

/pəˈrɪmɪtər/
noun
  1. The outer boundary or edge of a shape, area, or object.
    • We walked around the perimeter of the park to enjoy the view.
    • Security guards patrol the perimeter of the building every hour.
    • The teacher asked us to calculate the perimeter of the rectangle.
  2. The total length of the outer boundary of a shape.
    • The pool has a perimeter of 30 feet, perfect for a small backyard.
    • To find the perimeter, add up all the side lengths of the polygon.
    • The perimeter of the garden is 50 meters, so we need enough fencing.
  3. A defended or secure boundary around a military or protected area.
    • The base commander ordered a tight perimeter after the alert.
    • The soldiers set up a perimeter around the camp to keep intruders out.
    • During the event, police established a secure perimeter for safety.
What does "perimeter" mean? | whatsthatwordmean | whatsthatwordmean