Definition of caliber in English:


Syllabification: cal·i·ber
Pronunciation: /ˈkaləbər
(British calibre
, abbreviation: cal or cal.)


  • 1The quality of someone’s character or the level of someone’s ability: they could ill afford to lose a man of his caliber
    More example sentences
    • Candidates of character and calibre with a sense of dedication and social commitment alone are to be elected.
    • And they are well aware of our real character, our real calibre, and our real commitment to putting the people first.
    • Love them or hate them, leaders of high calibre have the ability to grip the imagination; to make people feel that they've been swept up and carried in a direction of great promise.
    quality, merit, distinction, stature, excellence, preeminence; ability, expertise, talent, capability, capacity, proficiency
  • 1.1The standard reached by something: educational facilities of a very high caliber
    More example sentences
    • With players of that calibre reaching full fitness and Duff still to be unleashed, the next couple of months could well prove extremely interesting.
    • Still if they can manage to recruit the right calibre of personnel to stand alongside Mayor Nuala Ryan who knows how things may pan out for them.
    • So what does an actor of MacLachlan's calibre do to reach the A-list - even if it's just for a fleeting moment?
  • 2The internal diameter or bore of a gun barrel: [in combination]: a .22 caliber repeater rifle
    More example sentences
    • Improved projectiles were as important as larger calibres and longer barrels.
    • The barrel flutes vary in size for different calibers and barrel lengths, and perform a couple of functions.
    • For larger calibers and long-gun bores, the 3 - Piece Large Rifle Calibers and Shotgun Kits contain a larger-diameter rod.
  • 2.1The diameter of a bullet, shell, or rocket.
    More example sentences
    • At least 834 bullets of various calibers, weapons and three ready-to-use bomb circuits were also confiscated.
    • While the gargantuan engineering firm is better known for its hydro dams in Cree country, it also makes a lot of bullets, of different calibres, specifications and killing techniques.
    • Anyway, eh, I figure that the calibre of the bullets, plus the range and angle used whilst firing the weapon on the lock would figure in to it somewhere.
  • 2.2The diameter of a circular body, such as a tube, blood vessel, or fiber.
    More example sentences
    • It regulates the calibre of blood vessels to vary the distribution of blood to the organs, whilst also maintaining the correct blood pressure.
    • A decrease in the caliber of blood vessels going to the ‘light’ areas suggests airway disease or vasculopathy.
    • Mental states occasion also changes in the calibre of blood-vessels, or alteration in the heart-beats, or processes more subtle still, in glands and viscera.



[also in combination]
More example sentences
  • Whereupon the man drew a heavy calibered revolver and shot him in the abdomen, the bullet coming out through his side.
  • In fact, the only large calibered piece not thus mounted is the Schneider mortar, a very efficient weapon, having a remarkably smooth recoil, which has a range of over six miles.
  • This is a paper target handgun and small calibered rifle range.


mid 16th century (in the sense 'social standing or importance'): from French calibre, from Italian calibro, perhaps from Arabic ḳālib 'mold', based on Greek kalapous 'shoemaker's last'.

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