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The word "pound" comes from the Latin word pendere, meaning "to weigh". The Latin word libra means "scales, balances" and it also describes a Roman unit of mass similar to a pound. This is the origin of the abbreviation "lb" for the pound. Note also that "lbs" is incorrect for two reasons. One, it is not possible to make that Latin phrase plural by adding an "s." Second, we do not add "s" to pluralize any other abbreviated units of measure: inches is still just "in."; meters is just "m". Pounds is just "lb."

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12y ago

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