Meaning of caliber

cal•i•ber

Pronunciation: (kal'u-bur), [key]
— n.
  1. the diameter of something of circular section, esp. that of the inside of a tube: a pipe of three-inch caliber.
  2. the diameter of the bore of a gun taken as a unit of measurement.
  3. degree of capacity or competence; ability: a mathematician of high caliber.
  4. degree of merit or excellence; quality: the high moral caliber of the era.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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