Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Smaller in caliber than the barrel of the gun from which it was fired. Used of projectiles.
  • adjective Relating to or firing such projectiles.

from The Century Dictionary.

  • Of less caliber: said of a projectile as compared with the bore of the gun. See subcaliber projectile, under projectile.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Smaller than the caliber of a firearm.
  • adjective a projectile having a smaller diameter than the caliber of the arm from which it is fired, and to which it is fitted by means of a sabot.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Smaller than the caliber of a firearm.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

sub- +‎ caliber

Examples

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