释义
[ dahy-am -i-ter ] SHOW IPA
/ daɪˈæm ɪ tər / PHONETIC RESPELLING
SEE SYNONYMS FOR diameter ON THESAURUS.COM
noun Geometry . 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. the length of such a line.
the width of a circular or cylindrical object.
Origin of diameter 1350–1400; Middle English
diametre <Old French <Latin
diametros <Greek
diámetros diagonal, diameter, equivalent to
dia- dia- +
-metros, derivative of
métron meter
1
WORDS THAT MAY BE CONFUSED WITH diameter circumference, diameter , radius, tangent Words nearby diameter diamanté, diamantiferous, Diamantina, diamantine, di-amelia, diameter , diametral, diametric, diametrical, diametrically, diamide
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020
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.
Six ways to make your ATV even more rugged | By Tyler Freel/Outdoor Life| September 17, 2020| Popular Science
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 .
This dinosaur was no bigger than a hummingbird | Carolyn Gramling| April 13, 2020| Science News For Students
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.
The Little Syrian Girl With a Bullet in Her Head | Gregory Beals| November 29, 2013| DAILY BEAST
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 .
17 Facts to Crack the Mystery of Pi | Abby Haglage| March 14, 2013| DAILY BEAST
Today the seven Centennial trees are about two feet in diameter and about 60 feet high.
Northern Nut Growers Association Report of the Proceedings at the | Various
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.
Early Western Travels 1748-1846, Volume 28 | Various
This lake was nearly round, and probably somewhat less than one-half mile in diameter .
With the World's Great Travellers, Volume 1 | Various
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
SEE MORE EXAMPLES SEE FEWER EXAMPLES
British Dictionary definitions for diameter noun 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 the thickness of something, esp with circular cross section
Word Origin for diameter C14: from Medieval Latin diametrus, variant of Latin diametros, from Greek: diameter, diagonal, from dia- + metron measure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Words related to diameter width, breadth, bore, caliber, broadness, module
Cultural definitions for diameter A straight line passing through the center of a figure, especially a circle or sphere, and joining two opposite points on its circumference.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Medical definitions for diameter n. A straight line connecting two opposite points on the surface of a spherical or cylindrical body, or at the boundary of an opening or foramen, passing through the center of such body or opening.
The distance measured along such a line.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for diameter A straight line segment that passes through the center of a circle or sphere from one side to the other.
The length of such a line segment.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.