noun. undefined

noun. A closed line bounding a plane area.

noun. The length of such a line.

noun. The outer limits of an area. synonym: circumference.

noun. A defended boundary protecting a military position.

noun. The three-point line.

noun. The circumference, border, or outer boundary of a superficial figure; also, the measure of this boundary.

noun. An instrument for determining the visual power of different parts of the retina and plotting areas of distinct vision.

noun. The outer boundary of a body or figure, or the sum of all the sides.

noun. An instrument for determining the extent and shape of the field of vision.

noun. The sum of the distance of all the lengths of the sides of an object.

noun. The outer limits of an area. See Synonyms at circumference.

noun. The length of such a boundary.

noun. A fortified strip or boundary usually protecting a military position.

noun. An instrument for determining the extent and shape of the field of vision.

noun. a line enclosing a plane areas

noun. the boundary line or the area immediately inside the boundary

noun. the size of something as given by the distance around it

"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."