circumference

[ ser-kuhm-fer-uhns ]
/ sərˈkʌm fər əns /

noun

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

1350–1400; Middle English < Late Latin circumferentia, equivalent to circum- circum- + fer- (stem of ferre to carry) + -entia -ence

Can be confused

circumference diameter radius tangent
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for circumference

British Dictionary definitions for circumference

circumference

/ (səˈkʌmfərəns) /

noun

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

Derived Forms

circumferential (səˌkʌmfəˈrɛnʃəl), adjectivecircumferentially, adverb

Word Origin for circumference

C14: from Old French circonference, from Latin circumferre to carry around, from circum- + ferre to bear
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for circumference

circumference

[ sər-kŭmfər-əns ]

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 American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for circumference

circumference

[ (suhr-kum-fuhr-uhns) ]

The measure of the distance around a circle.


The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.