caliber

[ kal-uh-ber ]
/ ˈkæl ə bər /

noun

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.
Also especially British, cal·i·bre.

Origin of caliber

1560–70; variant of calibre < Middle FrenchArabic qālib mold, last < Greek kālápous shoe last, equivalent to kāla- combining form of kâlon wood + poús foot (see -pod)

Related forms

cal·i·bered; especially British, cal·i·bred, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for caliber

Medicine definitions for caliber

caliber

[ kălə-bər ]

n.

The diameter of the inside of a round cylinder, such as a tube.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.