diameter
/daɪˈæmətər/
noun
- A straight line passing from one side of a circle or sphere to the other through its center; the length of such a line.
- To find the circumference, multiply the diameter by pi.
- The diameter of the pizza was 12 inches.
- The tree trunk had a diameter of nearly two meters.
- The width or thickness of something, especially a round object or a tube.
- The telescope's lens diameter determines how much light it can gather.
- They measured the diameter of the wire before cutting it.
- The pipe has a diameter of three centimeters.