- 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.
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Origin of diameter
Words nearby diameter
Example sentences from the Web for diameter
I also like a slightly wider tire over the stock rubber, but I usually only get an inch larger diameter tire.
For now, the team plans to set the diameter of the cones by hand.How special relativity can help AI predict the future|Will Heaven|August 28, 2020|MIT Technology Review
Both are tiny—Phobos, the larger, is 14 miles in diameter, scarcely bigger than Manhattan Island—but they also circle extremely close to the planet.These Images Expose the Dark Side of the Solar System - Issue 89: The Dark Side|Corey S. Powell|August 26, 2020|Nautilus
In contrast, a raindrop’s diameter can be 20 to 30 times that size.Explainer: Rainbows, fogbows and their eerie cousins|Matthew Cappucci|May 1, 2020|Science News For Students
Those deep sockets can increase the eye’s visual ability without increasing its diameter.
Kepler-186f is about 11 percent larger than Earth in diameter, which means it has nearly 25% more surface area.What Does the Discovery of “Another Earth” Mean for Us?|Matthew R. Francis|April 18, 2014|DAILY BEAST
An array of whittled bamboo sticks, each four millimeters in diameter, makes up the two-room installation.The Royal Academy Wants You to Finish This Artwork|Chloë Ashby|January 24, 2014|DAILY BEAST
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.Daniel Boulud Reveals His 4 Favorite Recipes From His New Cookbook|Daniel Boulud|October 15, 2013|DAILY BEAST
Pi is officially defined as the ratio of the circumference of a circle to its diameter.
Today the seven Centennial trees are about two feet in diameter and about 60 feet high.
It is enveloped in a delicate vesicle, the diameter of which is very much greater than that of the contained ovum.The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour
Many of the pines on this ridge were two feet in diameter, and a hundred feet high, with small clusters of limbs around the tops.
This lake was nearly round, and probably somewhat less than one-half mile in diameter.
All along the side of the road extended an array of huge new pipes, some three feet in diameter, awaiting their turn underground.The Adventures of a Three-Guinea Watch|Talbot Baines Reed
British Dictionary definitions for diameter
- a straight line connecting the centre of a geometric figure, esp a circle or sphere, with two points on the perimeter or surface
- the length of such a line