American Heritage® Dictionary of the English Language, Fourth Edition
- n. The diameter of the inside of a round cylinder, such as a tube.
- n. The diameter of the bore of a firearm, usually shown in hundredths or thousandths of an inch and expressed in writing or print in terms of a decimal fraction: .45 caliber.
- n. The diameter of a large projectile, such as an artillery shell, measured in millimeters or in inches.
- n. Degree of worth; quality: a school of high caliber; an executive of low caliber.
Century Dictionary and Cyclopedia
- n. The diameter of a body, especially of the hollow inside of a cylinder: as, the caliber of a piece of ordnance or other firearm. In the United States the caliber of a firearm is expressed in decimal parts of an inch; thus, a rifle of .44-inch caliber (often shortened to “a 44-caliber rifle,” “a 32-caliber pistol,” etc.); of a cannon, either by the diameter of its bore, as a 10-inch gun, or by the weight of a solid round shot which it can carry, as a 12-pounder. In Great Britain the calibers of small arms are commonly expressed in decimal parts of an inch; of field-guns, by the weight of a solid round shot which will fit the bore, as a 6-pounder; of heavy guns, in tons, as a 38-ton gun or a 100-ton gun. In France and in other countries on the continent the caliber is expressed in millimeters or centimeters.
- n. Figuratively, compass or capacity of mind; the extent of one's intellectual endowments.
- n. In horology: The distance between the two plates of a watch which determines the flatness of the movement.
- n. The plate upon which is traced the arrangement of the pieces of a clock; the pattern-plate.
- In gunnery, to ascertain the caliber of; calibrate. See caliper.
- n. US spelling of calibre.
GNU Webster's 1913
- n. (Gunnery) The diameter of the bore, as a cannon or other firearm, or of any tube; or the weight or size of the projectile which a firearm will carry.
- n. The diameter of round or cylindrical body, as of a bullet or column.
- n. Fig.: Capacity or compass of mind.
- n. a degree or grade of excellence or worth
- n. diameter of a tube or gun barrel
- French calibre, from Italian calibro, from Arabic qālib, qālab, mold, shoe tree, from Greek kālapous, shoemaker's last : kālon, wood + pous, foot. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The word caliber is not used when giving the metric measurement.”
“In my opinion the caliber is at its best when shots present themselves at 100 yards or more, although I have killed several dear at less than 50 with it.”
“I have no problem with someone using a military style rifle to hunt with provided the caliber is adequate for the job at hand.”
“Our goal when developing loading data for this caliber is achievement of maximum accuracy and down-range energy consistent with safe velocity and pressure constraints.”
“I agree with you Chad on the 6. 5x55; (love my CZ 550) but the other caliber is the 9. 3x74.”
“If you could access data reporting the total sale of ammunition by caliber from the three largest manufacturering companies, then extract the data for the most recognized calibers used for whitetail deer and compare the percentages of sales for each caliber to your list of percentages of calibers of B&C entrants, that may be a valid comparison.”
“Trying to predict what weapon or caliber is being used around the country on a variety of species based on what goes on in your part of the world is about like assuming the weather in your backyard is representative of the whole country.”
“This sounds like the old "which caliber is better" argument in another form.”
“In reality my favorite caliber is the much maligned 7 mm Ultra or 7 mm x .404 Jeffrey.”
“The questioner acknowledges that the caliber is not ideal, but wants to know if it is adequate.”
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