Synonyms for circumference

noun

circumference refers to the line bounding a circle or any approximately circular or elliptical area; perimeter extends the meaning to a line bounding any area or figure, as a triangle, square, or polygon; periphery, in its literal sense identical with perimeter, is more frequently used of the edge of a physical object or in an extended metaphoric sense the periphery of understanding; circuit can also denote a line bounding an area, but now usually refers to a course or journey around a periphery the moon's circuit of the earth; compass refers literally to an area within specific limits but is often used figuratively the compass of the city, the compass of freedom