- the outer boundary, especially of a circular area; perimeter: the circumference of a circle.
- the length of such a boundary: a one-mile circumference.
- the area within a bounding line: the vast circumference of his mind.
Origin of circumference
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for circumference
The rest that extends beyond the circumference of the meat quickly melts down onto the surface of the flattop.The Real Cheeseburger Paradise
Jane & Michael Stern
June 22, 2014
Pi is officially defined as the ratio of the circumference of a circle to its diameter.17 Facts to Crack the Mystery of Pi
March 14, 2013
Draw a diagram representing the circumference line and pitch in feet.Flying Machines
W.J. Jackman and Thos. H. Russell
Melville is an island of more than a mile in circumference, with low, rocky shores.Ned Myers
James Fenimore Cooper
From points near the circumference these circles or curves are very small.
Draw a few straight lines, from the centre to the circumference of a circle.Modern Painters Volume I (of V)
The diameter is then multiplied by 3.1416 to obtain the circumference.Boys' Book of Model Boats
Raymond Francis Yates
- the boundary of a specific area or geometric figure, esp of a circle
- the length of a closed geometric curve, esp of a circle. The circumference of a circle is equal to the diameter multiplied by π
Word Origin and History for circumference
late 14c., from Latin circumferentia, neuter plural of circumferens, present participle of circumferre "to lead around, take around, carry around," from circum "around" (see circum-) + ferre "to carry" (see infer). A loan-translation of Greek periphereia "periphery, the line round a circular body," literally "a carrying round" (see periphery). Related: Circumferential.
- The boundary line of a circle.
- The boundary line of a figure, area, or object.
- The length of such a boundary. The circumference of a circle is computed by multiplying the diameter by pi.
The measure of the distance around a circle.