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Circumference - Meaning, Definition & English Examples

Circumference is the distance around the edge of a circle or any rounded object. It is calculated using the formula 2πr, where r is the radius.

circumference

/sɚˈkʌmfrəns/ /səˈkʌmf(ə)rəns/

Definition:

The distance around the edge of a circle or any rounded geometric figure.

Synonyms:

perimeter, boundary, edge, rim

Part of Speech:

noun

Antonyms:

center, diameter

Common Collocations:

measure the circumference, calculate the circumference, wide circumference

Derivatives:

circumferential, circumferentially

Usage Tips:

Use "circumference" when referring to the outer boundary of circular objects or shapes.

Common Phrases:

around the circumference, within the circumference, full circumference

Etymology:

From Latin "circumferentia," meaning "a carrying around," from "circum" (around) and "ferre" (to carry).

Examples:

  • 1. The circumference of the Earth is approximately 40,075 kilometers at the equator.
  • 2. She measured the circumference of the tree trunk to estimate its age.
  • 3. The formula for calculating a circle's circumference is π multiplied by its diameter.
  • 4. A marathon runner covers a distance close to the Earth's polar circumference over months of training.

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