##  [Diameter](/diameter) 

  ##  [Diameter](https://puremath.quantumdictionary.io/diameter-0) 

  

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- Mathematics & Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The greatest distance between any two points of a set, equivalently the supremum of pairwise distances in a metric space; for a circle or sphere the diameter equals twice the radius.