- the diameter of something of circular section, especially that of the inside of a tube: a pipe of three-inch caliber.
- Ordnance. the diameter of the bore of a gun taken as a unit of measurement.
- degree of capacity or competence; ability: a mathematician of high caliber.
- degree of merit or excellence; quality: the high moral caliber of the era.
Origin of caliber
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for caliber
The caliber at which Sam and the entire crew preformed dubbed them professionals not students.Nitehawk Shorts Festival: ‘Brute,’ a Twisted Take on Playing in the Dark
November 28, 2014
It was later reported that the weapon was a BB gun that appeared to be a .45-caliber pistol.The 14 Teens Killed by Cops Since Michael Brown
November 25, 2014
Still, the school has gotten more difficult to get into and the caliber of student attending has improved, as a result.How The University of Wisconsin Badgers Are Bucking the Big Ten Ticket Flop
October 31, 2014
When the body of Johnson was exhumed, the medical examiner was acutely chagrined when six .22 caliber rounds were removed from it.The Myth of the Central Park Five
October 19, 2014
He swaggered into the school cafeteria that day with a .22 caliber handgun and started shooting randomly.How To Plan A Jailbreak
September 13, 2014
Had he dreamed of the hammer blow of that forty-five caliber bullet?
Hundreds and thousands of people have minds of this caliber.Browning's England
Helen Archibald Clarke
What business could a detective of his caliber have to do with Bertrand Rockamore?The Crevice
William John Burns and Isabel Ostrander
Sufficiently expert to care little for an enemy of his caliber.Tom Burke Of "Ours", Volume I (of II)
Charles James Lever
Guns of all caliber belched their deadly missiles at the charging French.Fighting in France
Word Origin and History for caliber
1560s, "degree of merit or importance," a figurative use from Middle French calibre (late 15c.), apparently ultimately from Arabic qalib "a mold for casting." Arabic also used the word in the sense "mold for casting bullets," which is the oldest literal meaning in English. Meaning "inside diameter of a gun barrel" is attested from 1580s. Barnhart remarks that Spanish calibre, Italian calibro "appear too late to act as intermediate forms" between the Arabic word and the French.
- The diameter of the inside of a round cylinder, such as a tube.