Definition, Meaning & Synonyms
diameter
noun
/daɪˈæmətər/

Definition
The distance across a circle through its center.

Examples
- The diameter of the Earth is about 12,742 kilometers.
- To find the area of a circle, you need to know the diameter.
- The wheel has a diameter of 20 inches.

Meaning
Diameter refers to a straight line that passes through the center of a circle and connects two points on its perimeter. It also represents the length of that line.

Synonyms
- width
- breadth
- extent