In geometry, a diameter of a circle is any straight line segment that passes through the centre of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle.

Diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circumference of a circle. Learn how to find the diameter of a circle using radius, …

If you're wondering how to calculate the diameter of a circle, this diameter of a circle calculator is a perfect choice. You will need either the radius, the circumference, or the area of a given circle for the …

Oct 22, 2025 · From clear definitions and real-life examples to FAQs and a quick quiz, explore everything you need to know about diameter in this guide.

The diameter of a circle is the length of the line through the center and touching two points on its edge. In the figure above, drag the orange dots around and see that the diameter never changes.

A diameter represents the widest possible distance across a circle. This maximum distance can only be achieved by a line segment that passes directly through the center point.

The meaning of DIAMETER is a chord passing through the center of a figure or body. How to use diameter in a sentence.

Illustrated definition of Diameter: The distance from one point on a circle through the center to another point on the circle. It is also the...

The diameter of a circle is a line segment that passes through the center of the circle and has endpoints on the circle. Line segment AB above is a diameter for circle O since endpoints A and B lie on the …

DIAMETER meaning: 1 : a straight line from one side of something (such as a circle) to the other side that passes through the center point; 2 : the distance through the center of something from one side …