Definition of caliber
1a : degree of mental capacity or moral quality <teachers of high caliber>b : degree of excellence or importance <the caliber of instruction>
2a : the diameter of a bullet or other projectileb : the diameter of a bore of a gun usually expressed in hundredths or thousandths of an inch and typically written as a decimal fraction <.32 caliber>
3 : the diameter of a round or cylindrical body; especially : the internal diameter of a hollow cylinder
Examples of caliber in a sentence
I was impressed by the high caliber of the team's work.
<musicians of the highest caliber perform at that concert hall>
Origin and Etymology of caliber
Medieval French calibre, from Old Italian calibro, from Arabic qālib shoemaker's last
First Known Use: 1588
CALIBER Defined for English Language Learners
Definition of caliber for English Language Learners
: level of excellence, skill, etc.
: a measurement of the width of a bullet or a gun barrel
CALIBER Defined for Kids
Definition of caliber for Students
1 : level of excellence, skill, or importance <She is a writer of the highest caliber.>
2 : the diameter of a bullet or of the hole in the barrel of a gun
calibre\ˈkal-ə-bər, British also kə-ˈlē-\play
Medical Definition of caliber
: the diameter of a round or cylindrical body; especially : the internal diameter of a hollow cylinder
Seen and Heard
What made you want to look up caliber? Please tell us where you read or heard it (including the quote, if possible).