- cal|i|ber
- cal|i|ber «KAL uh buhr», noun.1. a) the inside diameter of the barrel of a rifle, shotgun, or pistol. A.45-caliber revolver has a barrel with an inside diameter of 45/100 of an inch. A 155-mm. rifle has a barrel with an inside diameter of 155 millimeters. b) the diameter of a bullet or shell fired from a particular gun. c) the diameter of the bore of a cannon, or other piece of artillery, used as a unit to express its length: »
a 40-caliber 12-inch gun.
d) the internal diameter of a tube or hollow cylinder, such as an artery.2. Figurative. a) amount of ability or merit: »We have been able to find men of high caliber to fill the vacancies.
SYNONYM(S): capacity, competence. b) degree of excellence or importance; quality: »We are always trying to improve the caliber of our schools.
SYNONYM(S): grade, standard. Also, calibre.╂[< Middle French calibre < Arabic qālib a mold]
Useful english dictionary. 2012.