Synonyms of circumference

1. circumference, perimeter, size: usage: the size of something as given by the distance around it
2. circumference, circuit, boundary line, border, borderline, delimitation, mete: usage: the boundary line encompassing an area or object; "he had walked the full circumference of his land"; "a danger to all races over the whole circumference of the globe"
3. circumference, length: usage: the length of the closed curve of a circle