# diameter

### noun

- a straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end.
- a straight line passing from side to side of any figure or body, through its center.

## Origin of diameter

## Examples from the Web for diameter

### Contemporary Examples of diameter

Kepler-186f is about 11 percent larger than Earth in diameter, which means it has nearly 25% more surface area.

An array of whittled bamboo sticks, each four millimeters in diameter, makes up the two-room installation.

The doctors discovered the entry wound into the frontal lobe with a diameter about equal to that of a cigarette.

Using a 2-inch (5cm) diameter ring cutter, cut the scallops into straight cylinders; reserve the trim.

Pi is officially defined as the ratio of the circumference of a circle to its diameter.

### Historical Examples of diameter

Lay a young birch or maple an inch or so in diameter across a log.

The ForestStewart Edward White

He employed a cylinder 12 centimeters in diameter fitted with a piston.

This island is very small, not above half a league in diameter.

The History of LouisianaLe Page Du Pratz

The clearing was a circle some two hundred yards in diameter.

The Bluff of the HawkAnthony Gilmore

The boom should be made a trifle smaller in diameter than the mast.

Boys' Book of Model BoatsRaymond Francis Yates