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circumference

nounfeminine/siɾkũfɨɾˈẽsjɐ/medium

cir·cun·fe·rên·ci·a

Definition

A closed plane curve consisting of all points at a given distance (radius) from a fixed point (center). Also, the length of this curve.
They measured the circumference of the tree trunk.
The circumference of the circle is calculated using the formula 2πr.

Etymology

Do latim 'circumferentia'.

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