perimeter
pe-rim-e-ter
noun
The outer boundary of an area or object, or the total length of this boundary.
"They patrolled the perimeter of the military base."
Thesaurus
Synonyms: circumference, border, margin
pe-rim-e-ter
The outer boundary of an area or object, or the total length of this boundary.
"They patrolled the perimeter of the military base."
Synonyms: circumference, border, margin