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Definition of caliber

caliber

/ˈkæl.ə.bɚ/
(UK: calibre)
cal · i · ber
Plural:calibers
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caliber Lexical Profile

caliber Game Scores & Validity

• noun

1

American The quality, level of ability, or standard of a person's character, intellect, or work.

Example

"The university attracts researchers of the highest caliber from around the world."

2

American The internal diameter of a circular tube, pipe, or firearm barrel, or the external diameter of a projectile.

Example

"Engineers carefully measured the caliber of the hydraulic pipe before installing the valve."

Synonyms
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Antonyms
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Word Nuance & Usage

Spelled "caliber" in American English and "calibre" in British and Commonwealth English.

• Rhymes for caliber

• Nearby Words

calfskin
calgary
cali
caliber
calibered
calibrachoa
calibrate

Word Origin & Etymology

Borrowed in the 16th century from Middle French calibre, via Italian calibro, from Arabic qālib meaning "shoemaker's last" or "mold for casting metal," ultimately from Ancient Greek kalapous.

Cite this Entry

Wordmom. (2026). Definition of Caliber. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/caliber
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