Inch & Ounce Same Etymology Latin Uncia Meaning 1/12th or Small Part Avoirdupois Weight System 1/16th of Pound

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‘The word inch is from the Latin word uncia which means 1/12th or small part (for instance of a foot) while in the French avoirdupois weight system are 16 ounces (small parts) per pound, brought by the Romans during their empire building, big influencers on the languages of the Gauls and the Brits.