The term caliber has its origins from two possible sources. It was initially borrowed from French calibre in the late sixteenth century, referring to the measurement of a gun’s barrel diameter. Over time, this term evolved in English to symbolize “measurements” of personal quality or ability, leading to its modern definition. Interestingly, calibre also stems from a Spanish word with the same spelling, which is the root of the English noun calliper (a tool for measuring internal or external dimensions). The etymology of calliper has sparked debate among linguists. Some argue it traces back to the Arabic qalib, meaning “casting mold” (potentially linked to Ancient Greek kalapous related to shoemaking), while others claim it originates from Latin qua libra, translating to “of what weight”. Regardless of its precise origin, the journey of these words is undeniably fascinating!
