cir
cum
ference
Plural
circumferences
1
the distance around the external boundary of something
- The athlete completed a lap around the track, covering the entire circumference in record time.
- To estimate the size of the pond, we measured the circumference using a measuring tape.
- She measured the circumference of the tree trunk to determine its age.
Synonyms:
2
(geometry) the length of the external boundary of a curved shape, especially a circle
- The formula for finding the circumference of a sphere involves multiplying the diameter by π (pi).
- In geometry class, we learned how to find the circumference of various geometric shapes.
- To find the circumference of a wheel, you need to know its radius or diameter.
- The teacher explained that the circumference is different from the area of a circle.
- The mathematician used the circumference to solve the geometry problem.
3
the boundary line encompassing an area or object
Synonyms: